TY - CHAP A1 - Schmidt, Michael A1 - Palekhov, Dmitry ED - Shvetz, Vasily ED - Palekhova, Ludmila T1 - Проблема трансформации высшего образования в интересах устойчивого развития T1 - The Problem of Transition of University Education towards Sustainable Development T2 - Management, Marketing and Entrepreneurship: Promoting Sustainable Development, Proceedings of the First International Scientific-Practical Internet Conference, 25-26 December 2014, Dnepropetrovsk-Cottbus KW - Sustainable development KW - Education for sustainable development KW - University education KW - Green curriculum Y1 - 2015 UR - http://ev.nmu.org.ua/conf-forum/files/2014/87.pdf SN - 978-617-7109-67-8 SP - 182 EP - 183 PB - PP Accent CY - Dnepropetrovsk ER - TY - CHAP A1 - Schmidt, Michael A1 - Palekhov, Dmitry A1 - Iskakov, Bolat A1 - Kozhakhan, Aigul ED - Shvetz, Vasily ED - Palekhova, Ludmila T1 - Продвижение знаний об ответственной разработке полезных ископаемых в технических ВУЗах T1 - Dissemination of Knowledge on Responsible Extraction of Mineral Resources in Technical Universities T2 - Management, Marketing and Entrepreneurship: Promoting Sustainable Development, Proceedings of the First International Scientific-Practical Internet Conference, 25-26 December 2014, Dnepropetrovsk-Cottbus KW - Sustainable development KW - Green curriculum KW - University education KW - Voluntary Sustainability Standards KW - Responsible mining KW - IRMA Y1 - 2015 UR - http://ev.nmu.org.ua/conf-forum/files/2014/95.pdf SN - 978-617-7109-67-8 SP - S. 196 PB - PP Accent CY - Dnepropetrovsk ER - TY - CHAP A1 - Kempka, Thomas A1 - Herd, Rainer A1 - Huenges, Ernst A1 - Endler, Ricarda A1 - Jahnke, Christoph A1 - Janetz, Silvio A1 - Jolie, Egbert A1 - Kühn, Michael A1 - Magri, Fabien A1 - Meinert, Peter A1 - Moeck, Inga A1 - Möller, Marcus A1 - Munoz, Gerard A1 - Ritter, Oliver A1 - Schafrik, Wladislaw A1 - Schmidt-Hattenberger, Cornelia A1 - Tillner, Elena A1 - Voigt, Hans-Jürgen A1 - Zimmermann, Günter ED - Liebscher, Axel ED - Münch, Ute T1 - Geological Storage of CO2 – Long Term Security Aspects KW - Caprock Formation - Carbon Capture - Fluid Migration - Geological CO2 Storage - Geological Carbon Sequestration - Reservoir Management - Risk Analysis Y1 - 2015 UR - http://www.springer.com/earth+sciences+and+geography/geophysics/book/978-3-319-13929-6 SN - 978-3-319-13929-6 SP - 183 EP - 209 PB - Springer CY - Berlin [u.a.] ER - TY - RPRT A1 - Mettke, Angelika A1 - Schmidt, Stephanie A1 - Meetz, Michael A1 - Liesemeier, Birgit A1 - Verheyen, Frank T1 - Steigerung der Ressourceneffizienz des Recyclings von mineralischen Bau- und Abbruchabfällen : Brandenburger Leitfaden für den Rückbau von Gebäuden KW - Ressourceneffizienz KW - Rückbau KW - Abbruchabfälle KW - Bauabfälle KW - Leitfaden KW - Recycling Y1 - 2015 UR - http://www.uve.de/uve_Managementberatung_Aktuelles_Aktuelle-Meldungen_Leitfaden-Rueckbau-Gebaeude_de.html UR - http://www.mlul.brandenburg.de/cms/detail.php/bb1.c.322397.de PB - Ministerium für Ländliche Entwicklung, Umwelt und Landwirtschaft des Landes Brandenburg CY - Postdam ER - TY - CHAP A1 - Mutz, Michael A1 - Schmidt, Christian A1 - Fleckenstein, Jan H. ED - Brendelberger, Heinz ED - Martin, Peter ED - Brunke, Matthias ED - Hahn, Hans Jürgen T1 - Hydromorphologie des hyporheischen Interstitials T2 - Grundwassergeprägte Lebensräume : eine Übersicht über Grundwasser, Quellen, das hyporheische Interstitial und weitere grundwassergeprägte Habitate KW - hydrologische Prozesse KW - Stoffhaushalt Y1 - 2015 SN - 978-3-510-53012-0 SP - 139 EP - 153 PB - Schweizerbart CY - Stuttgart ER - TY - CHAP A1 - Palekhov, Dmitry A1 - Schmidt, Michael A1 - Albrecht, Eike ED - Schmidt, Michael ED - Hansmann, Berthold ED - Palekhov, Dmitry ED - Pivnyak, Gennadiy ED - Shemshuchenko, Yuri ED - Pavlenko, Anatoliy ED - Shapar, Arkadi ED - Shvetz, Vasily ED - Palekhova, Ludmila T1 - A Comparison of European and Ukrainian Environmental Assessment Procedures T1 - Сравнение европейской и украинской процедур экологической оценки T2 - Management for Sustainable Development in Transitional Economies KW - Environmental Assessment KW - Europe KW - Ukraine Y1 - 2015 SN - 978-617-7109-91-3 SP - 92 EP - 108 PB - PP Accent CY - Dnepropetrovsk ER - TY - CHAP A1 - Albrecht, Eike A1 - Schmidt, Michael A1 - Mißler-Behr, Magdalena A1 - Spyra, Simon T1 - Preface T2 - Implementing Adaptation Strategies by Legal, Economic, and Planning Instruments on Climate Change Y1 - 2014 SN - 978-3-540-77613-0 SP - XIII EP - XIV PB - Springer CY - Berlin [u. a.] ER - TY - CHAP A1 - Kempka, Thomas A1 - Herd, Rainer A1 - Huenges, Ernst A1 - Endler, Ricarda A1 - Jahnke, Christoph A1 - Janetz, Silvio A1 - Jolie, Egbert A1 - Kühn, Michael A1 - Magri, Fabien A1 - Meinert, Peter A1 - Moeck, Inga A1 - Möller, Marcus A1 - Munoz, Gerard A1 - Ritter, Oliver A1 - Schafrik, Wladislaw A1 - Schmidt-Hattenberger, Cornelia A1 - Tillner, Elena A1 - Voigt, Hans-Jürgen A1 - Zimmermann, Günter ED - Liebscher, Axel ED - Münch, Ute T1 - Joint Research Project Brine: Carbon Dioxide Storage in Eastern Brandenburg; Implications for Synergetic Geothermal Heat Recovery and Conceptualization of an Early Warning System Against Freshwater Salinization T2 - Geological Storage of CO2 - Long Termim Security Aspects KW - Carbon Dioxide Storage, CCS, Freshwater Salinization, Early Warning System Y1 - 2015 UR - http://www.springer.com/eart+sciences+and+geography/geophysics/book/978-3-319-13929-6 SN - 978-3-319-13929-6 U6 - https://doi.org/10.1007/978-3-319-13930-2 SP - 183 EP - 208 PB - Springer CY - Cham Switzerland ER - TY - CHAP A1 - Schmidt, Michael A1 - Palekhov, Dmitry A1 - Shvetz, Vasily A1 - Palekhova, Ludmila ED - Schmidt, Michael ED - Hansmann, Berthold ED - Palekhov, Dmitry ED - Pivnyak, Gennadiy ED - Shemshuchenko, Yuri ED - Pavlenko, Anatoliy ED - Shapar, Arkadi ED - Shvetz, Vasily ED - Palekhova, Ludmila T1 - Изменение парадигмы высшего образования для целей устойчивого развития T1 - Changing the Paradigm of University Education for Sustainable Development T2 - Management for Sustainable Development in Transitional Economies: Monograph N2 - The purpose of this chapter was to study the concept of university education for sustainable development ; to discuss methods of establishing a new model of education for sustainable development in countries with transitional economies. KW - sustainable development KW - higher education for sustainable development KW - educational programmes KW - curriculum Y1 - 2015 SN - 978-617-7109-91-3 SP - 365 EP - 380 PB - PP Accent CY - Dnepropetrovsk ER - TY - GEN A1 - Shvetz, Vasily A1 - Palekhov, Dmitry A1 - Schmidt, Michael A1 - Palekhova, Ludmila T1 - Building Up Knowledge on Sustainable Development at Higher Education Institutions T2 - Scientific Bulletin of National Mining University N2 - This article aims to describe theoretical and methodological approaches and provide practical recommendations for implementing principles of sustainable development into the education process at universities for non-environmental study programmes. KW - sustainable development KW - university education KW - higher education KW - green curriculum KW - international cooperation Y1 - 2015 UR - http://nv.nmu.org.ua/index.php/en/component/jdownloads/finish/55-04/8356-2015-04-shvetz/0 SN - 2071-2227 IS - 4 SP - 137 EP - 141 ER - TY - CHAP A1 - Shvetz, Vasily A1 - Palekhova, Ludmila A1 - Schmidt, Michael A1 - Palekhov, Dmitry ED - Nakaznyi, M. O. T1 - International Experience of University Partnership in the Field of Greening Education and E-learning Development T1 - Опыт международного партнерства университетов в сфере экологизации образования и развития дистанционного онлайн обучения T2 - Innovations in Higher Education – Modern Communications and Collaboration at the University Using Specific IT Tools: International collective monograph KW - partnership of universities KW - e-learning platform KW - sustainable development KW - ECO-Campus Y1 - 2015 UR - http://www.dstu.dp.ua/konf/info/2015_2/kollekt_monograf.pdf SN - 978-966-175-114-8 SP - 170 EP - 180 PB - Dniprodzerzhinsk State Technical University (DSTU) CY - Dniprodzerzhynsk ER - TY - GEN A1 - Pielnhofer, Florian A1 - Schöneich, Michael A1 - Lorenz, Tobias A1 - Yan, Wenjie A1 - Nilges, Tom A1 - Weihrich, Richard A1 - Schmidt, Peer T1 - A rational approach to IrPTe – DFT and CalPhaD studies on phase stability, formation and structure of IrPT e T2 - Zeitschrift für anorganische und allgemeine Chemie N2 - Phase formation, stability, crystal and electronic structures of IrPTe are investigated from experiment and quantum chemical calculations. The phase formation is studied from thermodynamic data and CalPhaD modeling. Applying a high-temperature gas-balance a formation pathway for IrPTe is studied from the elements and the binary parent compounds IrTe2 and IrP2. The obtained paracostibite (CoSbS) type structure contains rarely occurring heteroatomic P-Te dumbbells. The stability of IrPTe and the found structure is studied from DFT calculations with respect to the elements, IrTe2 and IrP2, and possible polymorphs. Probable metastable modifications with XY dumbbells (as known for isoelectronic compounds like CoAsS) are obtained from systematic DFT modelling. Phase transitions are predicted form the equation of states (EOS). According to its electronic band structure IrPTe is predicted as small gap (Eg = 0.5 eV) semiconductor. KW - phase stability KW - DFT KW - gas balance KW - thermodynamic modelling KW - structure prediction Y1 - 2015 UR - http://onlinelibrary.wiley.com/doi/10.1002/zaac.201500149/abstract U6 - https://doi.org/10.1002/zaac.201500149 SN - 1521-3749 VL - 641 IS - 6 SP - 1099 EP - 1105 ER - TY - GEN A1 - Groh, Matthias F. A1 - Breternitz, Joachim A1 - Ahmed, Ejaz A1 - Isaeva, Anna A1 - Efimova, Anastasia A1 - Schmidt, Peer A1 - Ruck, Michael T1 - Ionothermal Synthesis, Structure, and Bonding of the Catena-Heteropolycation 1∞[Sb2Se2]+ T2 - Zeitschrift für anorganische und allgemeine Chemie N2 - The reaction of antimony and selenium in the Lewis-acidic ionic liquid 1-butyl-3-methyl-imidazolium tetrachloridoaluminate, [BMIm]Cl·4.7AlCl3, yielded dark-red crystals of [Sb2Se2]AlCl4. The formation starts above 160 °C; at about 190 °C, irreversible decomposition takes place. The compound crystallizes in the triclinic space group Pequation image with a = 919.39(2) pm, b = 1137.92(3) pm, c = 1152.30(3) pm, α = 68.047(1)°, β = 78.115(1)°, γ = 72.530(1)°, and Z = 4. The structure is similar to that of [Sb2Te2]AlCl4 but has only half the number of crystallographically independent atoms. Polycationic chains 1∞[Sb2Se2]+ form a pseudo-hexagonal arrangement along [01-1], which is interlaced by tetrahedral AlCl4– groups. The catena-heteropolycation 1∞[Sb2Se2]+ is a sequence of three different four-membered [Sb2Se2] rings. The chemical bonding scheme, established from the topological analysis of the real-space bonding indicator ELI-D, includes significantly polar covalent bonding in four-member rings within the polycation. The rings are connected into an infinite chain by homonuclear non-polar Sb–Sb bonds and highly polar Sb–Se bonds. Half of the selenium atoms are three-bonded. KW - Chain structures KW - Antimony KW - Heteropolycations KW - Main-group elements KW - Selenium Y1 - 2015 UR - http://onlinelibrary.wiley.com/doi/10.1002/zaac.201400543/abstract U6 - https://doi.org/10.1002/zaac.201400543 SN - 1521-3749 VL - 641 IS - 2 SP - 388 EP - 393 ER - TY - GEN A1 - Osters, Oliver A1 - Nilges, Tom A1 - Schöneich, Michael A1 - Schmidt, Peer A1 - Rothballer, Jan A1 - Pielnhofer, Florian A1 - Weihrich, Richard T1 - Cd4Cu7As, the first representative of a fully ordered, orthorhombically distorted MgCu2 Laves phase T2 - Inorganic Chemistry N2 - The ternary Laves phase Cd4Cu7As is the first intermetallic compound in the system Cu–Cd–As and a representative of a new substitution variant for Laves phases. It crystallizes orthorhombically in the space group Pnnm (No. 58) with lattice parameters a = 9.8833(7) Å; b = 7.1251(3) Å; c = 5.0895(4) Å. All sites are fully occupied within the standard deviations. The structure can be described as typical Laves phase, where Cu and As are forming vertex-linked tetrahedra and Cd adopts the structure motive of a distorted diamond network. Cd4Cu7As was prepared from stoichiometric mixtures of the elements in a solid state reaction at 1000 °C. Magnetic measurements are showing a Pauli paramagnetic behavior. During our systematical investigations within the ternary phase triangle Cd–Cu–As the cubic C15-type Laves phase Cd4Cu6.9(1)As1.1(1) was structurally characterized. It crystallizes cubic in the space group Fd3m̅ with lattice parameter a = 7.0779(8) Å. Typically for quasi-binary Laves phases Cu and As are both occupying the 16c site. Chemical bonding, charge transfer and atomic properties of Cd4Cu7As were analyzed by band structure, ELF, and AIM calculations. On the basis of the general formula for Laves phases AB2, Cd is slightly positively charged forming the A substructure, whereas Cu and As represent the negatively charged B substructure in both cases. The crystal structure distortion is thus related to local effects caused by Arsenic that exhibits a larger atomic volume (18 Å3 compared to 13 Å3 for Cu) and higher ionicity in bonding. Y1 - 2012 UR - http://pubs.acs.org/doi/abs/10.1021/ic3005213 U6 - https://doi.org/10.1021/ic3005213 SN - 1520-510X VL - 51 SP - 8119 EP - 8127 ER - TY - GEN A1 - Günther, David A1 - Beckmann, Jens A1 - Schöneich, Michael A1 - Schmidt, Peer A1 - Klepel, Olaf T1 - Porous concrete as a template for the synthesis of porous carbon materials T2 - Carbon N2 - The potential of industrial porous concrete for using as a template for the synthesis of porous carbon materials has been investigated. Carbon replicas of porous concrete have been prepared by carbonization of sucrose. The pores of the resulting carbon materials range from the macropore to the micropore region, pointing to a hierarchy. Y1 - 2012 UR - http://www.sciencedirect.com/science/article/pii/S000862231200173X?np=y U6 - https://doi.org/10.1016/j.carbon.2012.02.039 SN - 0008-6223 VL - 50 IS - 8 SP - 3092 EP - 3116 ER - TY - GEN A1 - Schmidt, Peer A1 - Schöneich, Michael A1 - Bawohl, Melanie A1 - Nilges, Tom A1 - Weihrich, Richard T1 - Thermal analysis detecting equilibrium conditions: The use of the high temperature gas balance for thermogravimetric measurements T2 - Journal of Thermal Analysis and Calorimetry N2 - Several methods are established in thermal analysis to investigate phase formation, phase transition, and decomposition reactions. The analysis of phase equilibria with volatile components is particularly feasible by using standard method of thermogravimetry. Hardly any investigations of phase formation reactions are possible to realize if one of the components is lost by vaporization. By using the “High-Temperature Gas-Balance” (HTGB), the vapor phase is enclosed in a silica ampoule and thus forms an equilibrium gas phase in permanent contact with the solid phase. The measurement signal Δmmeas is caused by change of the leverage of the horizontal balance support during evaporation and condensation. The application of the HTGB allows the analysis of solid–gas equilibria in the working range from 0.01 till 15 bar at temperatures up to 1,100 °C. The first comparison of evaporation reactions determined by standard thermogravimetric analyses and by measurements using the HTGB is given for the inorganic systems: P, As, SeO2, PtI2, and Hg/I. KW - High-Temperature Gas-Balance KW - Thermogravimetry KW - Vapor pressure KW - Equilibrium measurements Y1 - 2012 UR - http://www.akademiai.com/doi/pdf/10.1007/s10973-011-2107-3 U6 - https://doi.org/10.1007/s10973-011-2107-3 SN - 1572-8943 VL - 110 IS - 3 SP - 1511 EP - 1521 ER - TY - GEN A1 - Osters, Oliver A1 - Nilges, Tom A1 - Bachhuber, Frederik A1 - Pielnhofer, Florian A1 - Weihrich, Richard A1 - Schöneich, Michael A1 - Schmidt, Peer T1 - Synthesis and Identification of Metastable Compounds: Black Arsenic—Science or Fiction? T2 - Angewandte Chemie / International edition N2 - Back in black: All metastable and stable phases can be identified for the solid solution arsenic/phosphorus by a combination of quantum-chemical calculations and investigations of the phase formation. Reaction paths for phase formations and transitions in situ were also evaluated. The results show that orthorhombic black arsenic (o-As) is metastable in pure form and has only been previously obtained by stabilizing impurities. KW - arsenic KW - metastable phases KW - phase formation KW - phosphorus KW - solid-state structures Y1 - 2012 UR - http://onlinelibrary.wiley.com/doi/10.1002/anie.201106479/abstract U6 - https://doi.org/10.1002/anie.201106479 SN - 1521-3773 VL - 51 IS - 12 SP - 2994 EP - 2997 ER - TY - GEN A1 - Tschulik, Kristina A1 - Hoffmann, Stefan A1 - Fokwa, Boniface P. T. A1 - Gilleßen, Michael A1 - Schmidt, Peer T1 - Studies regarding the homogeneity range of the zirconium phosphide telluride Zr2+xPTe2 T2 - Solid State Sciences N2 - The phosphide tellurides Zr2+δPTe2 (0 ≤ δ ≤ 1) can be synthesized from the elements in a solid state reaction or by thermal decomposition of Z. Zr2PTe2 decomposes under release of Te2(g) + P4(g) forming the homogeneity range Zr2+δPTe2. The growth of single crystals of Zr2+δPTe2 succeeded by chemical vapour transport using iodine as transport agent from 830 °C in direction of higher temperatures up to 900 °C. Zr2+δPTe2 crystallizes in the rhombohedral space group R-3m (no. 166) with lattice parameters a = 383(1)…386(1) pm and c = 2935(4)…2970(4) pm for δ = 0…1, respectively. Single crystal data have been determined for Zr2.40(2)PTe2 with lattice parameters a = 385.24(4) pm and c = 2967.8(4) pm. The electronic structure and chemical bonding in Zr2+δPTe2 was investigated by the linear muffin–tin orbital (LMTO) method. Both Zr2PTe2 and Zr3PTe2 show non-vanishing DOS values at the Fermi level (EF) indicating metallic character. According to COHP bonding analyses, mainly the heteroatomic Zr–P and Zr–Te bonds are responsible for the structural stability of Zr3PTe2. The new Zr2–Te bond, which is not present in Zr2PTe2, is stronger than Zr1–Te and is thought to be responsible for the stability of phases having Zr in excess. KW - Zirconium phosphide telluride KW - Homogeneity range KW - Thermal decomposition KW - Crystal structure KW - Chemical bonding Y1 - 2010 UR - http://www.sciencedirect.com/science/article/pii/S1293255810003614 U6 - https://doi.org/10.1016/j.solidstatesciences.2010.08.022 SN - 1293-2558 VL - 12 IS - 12 SP - 2030 EP - 2035 ER - TY - GEN A1 - Schöneich, Michael A1 - Hohmann, Andrea A1 - Schmidt, Peer A1 - Pielnhofer, Florian A1 - Bachhuber, Frederik A1 - Weihrich, Richard A1 - Osters, Oliver A1 - Köpf, Marianne A1 - Nilges, Tom T1 - Element allotropes and polyanion compounds of pnicogenes and chalcogenes: stability, mechanisms of formation, controlled synthesis and characterization T2 - Zeitschrift für Kristallographie - Crystalline Materials N2 - The application of the EnPhaSyn (theoretical Energy diagrams, experimental Phase formation, Synthesis and characterisation) concept is reviewed with respect to prediction of structures and stability of element allotropes and compound polymorphs, their phase formation and transition processes, and their directed synthesis, respectively. Therein, the relative energetical stability (En) of target compounds and possible decomposition are determined from quantum chemical DFT calculations. Phase formation and transition (Pha) is probed by a gas balance method, developed as high temperature gas balance concept. It helped to study the synthesis and stability range of several compounds experimentally. Applications of the concept and synthesis principles (Syn) of non-equilibrium phases are presented for allotropes of P, As, P1-xAsx, as well as binary and ternary compounds including the Zintl and Laves like phases IrPTe, NiP2, CoSbS, NiBiSe, Li0.2CdP2, Cu3CdCuP10, and Cd4Cu7As. KW - Arsenic KW - Phosporus KW - DFT KW - energy diagram KW - polymorph structure Y1 - 2017 UR - https://www.degruyter.com/view/j/zkri.ahead-of-print/zkri-2016-1966/zkri-2016-1966.xml U6 - https://doi.org/10.1515/zkri-2016-1966 SN - 2194-4946 VL - 232 IS - 1-3 SP - 91 EP - 105 ER - TY - GEN A1 - Zeugner, Alexander A1 - Kaiser, Martin A1 - Schmidt, Peer A1 - Menshchikova, Tatiana V. A1 - Rusinov, Igor P. A1 - Markelov, Anton V. A1 - Van den Broek, Wouter A1 - Chulkov, Evgueni V. A1 - Doert, Thomas A1 - Ruck, Michael A1 - Isaeva, Anna T1 - Modular Design with 2D Topological-Insulator Building Blocks: Optimized Synthesis and Crystal Growth and Crystal and Electronic Structures of BiₓTeI (x = 2, 3) T2 - Chemistry of Materials N2 - Structural engineering of topological bulk materials is systematically explored with regard to the incorporation of the buckled bismuth layer [Bi₂], which is a 2D topological insulator per se, into the layered BiTeI host structure. The previously known bismuth telluride iodides, BiTeI and Bi₂TeI, offer physical properties relevant for spintronics. Herewith a new cousin, Bi₃TeI (sp.gr. R3m, a = 440.12(2) pm, c = 3223.1(2) pm), joins the ranks and expands this structural family. Bi₃TeI = [Bi₂][BiTeI] represents a stack with strictly alternating building blocks. Conditions for reproducible synthesis and crystal-growth of Bi₂TeI and Bi₃TeI are ascertained, thus yielding platelet-like crystals on the millimeter size scale and enabling direct measurements. The crystal structures of Bi₂TeI and Bi₃TeI are examined by X-ray diffraction and electron microscopy. DFT calculations predict metallic properties of Bi₃TeI and an unconventional surface state residing on various surface terminations. This state emerges as a result of complex hybridization of atomic states due to their strong intermixing. Our study does not support the existence of new stacking variants BiₓTeI with x > 3; instead, it indicates a possible homogeneity range of Bi₃TeI. The series BiTeI–Bi₂TeI–Bi₃TeI illustrates the influence of structural modifications on topological properties. KW - Crytal growth KW - Topological insulator KW - Crystal structure KW - Electronic structure KW - Bismuth layered compounds Y1 - 2017 UR - http://pubs.acs.org/doi/abs/10.1021/acs.chemmater.6b05038 U6 - https://doi.org/10.1021/acs.chemmater.6b05038 SN - 0897-4756 SN - 1520-5002 VL - 29 IS - 3 SP - 1321 EP - 1337 ER -