@article{DeitingBoernoHanningetal.2016, author = {Deiting, D. and B{\"o}rno, F. and Hanning, S. and Kreyenschmidt, M. and Seidl, Tobias and Otto, M.}, title = {Investigation on the suitability of ablated carbon as an internal standard in laser ablation ICP-MS of polymers}, series = {Journal of Analytical Atomic Spectrometry}, volume = {31}, journal = {Journal of Analytical Atomic Spectrometry}, number = {8}, doi = {10.1039/C6JA00020G}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:1010-opus4-5040}, pages = {1605 -- 1611}, year = {2016}, abstract = {The conventional quantitative method for the analysis of inorganic elements in polymer matrices is a complex and time consuming process that presents a significant risk for error. Typically, polymers are digested in a microwave oven or other devices under high temperature and pressure for several hours while employing different mixtures of high purity acids. In many cases, particularly when high concentrations of doped elements are present, the digestion is often incomplete and therefore the reproducibility depends strongly on the type of polymer and additives used. A promising alternative technology that allows for the direct analysis of these polymers without digestion is laser ablation ICP-MS. Due to a lack of available reference materials and the presence of matrix dependent effects, a precise calibration cannot be obtained. In order to compensate for the matrix dependent effects the use of internal standardization is necessary. In this study the correlation between the carbon released during the ablation process and the 13C signal detected by ICP-MS and its use as an internal standard are investigated. For this purpose, twenty-one virgin polymer materials are ablated; the released carbon is determined and correlated with the corresponding integrated 13C signal. The correlation resulted in a direct relationship between the ablated carbon and 13C signal demonstrating the potential ability to neglect at least some of the matrix dependent and transport effects which occur during the laser ablation of virgin polymers.}, subject = {ICP-Massenspektrometrie}, language = {en} } @article{JorczykUrbanKohlmeieretal.2010, author = {Jorczyk, Udo and Urban, Bastian and Kohlmeier, Malte and Rettkowski, Rene and Str{\"u}cker, Rene}, title = {Verbesserung der Krankenhaushygiene durch das H{\"a}ndehygiene-Monitoringsystem IHMoS. Mehr Compliance bei der H{\"a}ndedesinfektion}, series = {Hygiene und Medizin}, volume = {35}, journal = {Hygiene und Medizin}, pages = {432 -- 436}, year = {2010}, language = {de} } @article{Bontrup2010, author = {Bontrup, Heinz-Josef}, title = {Die Schulden der einen sind das Verm{\"o}gen der anderen}, series = {VDI-Nachrichten}, journal = {VDI-Nachrichten}, pages = {2}, year = {2010}, language = {de} } @article{PohlmannSpooren2010, author = {Pohlmann, Norbert and Spooren, Sebastian}, title = {Sicheres Einkaufen im Internet}, series = {Gießener Zeitung}, journal = {Gießener Zeitung}, year = {2010}, language = {de} } @book{Lehner2011, author = {Lehner, Franz}, title = {Sozialwissenschaft}, address = {Wiesbaden}, isbn = {978-3-531-17406-8}, year = {2011}, language = {de} } @article{KernZimmermann2012, author = {Kern, Siegbert and Zimmermann, Marc}, title = {Operative Cockpits beschleunigen Abl{\"a}ufe. SAP effizienter machen}, series = {Computerwoche}, journal = {Computerwoche}, year = {2012}, language = {de} } @book{BallstaedtFriedrich2010, author = {Ballstaedt, Steffen-Peter and Friedrich, Helmut Felix}, title = {Wissenschaftliches Arbeiten. Einf{\"u}hrung in qualitative und quantitative Forschungsmethoden.}, publisher = {Europ{\"a}ische Fernhochschule}, address = {Hamburg}, year = {2010}, language = {de} } @article{HernlaKoehler2011, author = {Hernla, Michael and K{\"o}hler, Frank}, title = {Koordinatenmessungen - so genau wie n{\"o}tig. Serienteile mit optimalen Messstrategien effizient messen}, series = {QZ Qualit{\"a}t und Zuverl{\"a}ssigkeit}, volume = {56}, journal = {QZ Qualit{\"a}t und Zuverl{\"a}ssigkeit}, number = {2}, pages = {51 -- 53}, year = {2011}, language = {de} } @incollection{Ballstaedt2011, author = {Ballstaedt, Steffen-Peter}, title = {Interkulturelle technische Kommunikation mit Bildern}, series = {Bilder - Sehen - Denken. Zum Verh{\"a}lnis von begrifflich-philosophischen und empirisch-psychologischen Ans{\"a}tzen in der bildwissenschaftlichen Forschung}, booktitle = {Bilder - Sehen - Denken. Zum Verh{\"a}lnis von begrifflich-philosophischen und empirisch-psychologischen Ans{\"a}tzen in der bildwissenschaftlichen Forschung}, editor = {Sachs-Hombach, Klaus and Trotzke, Rainer}, publisher = {Herbert-von-Halem-Verlag}, address = {K{\"o}ln}, pages = {428 -- 441}, year = {2011}, language = {de} } @incollection{Weichler2010, author = {Weichler, Kurt}, title = {Journalistische Qualit{\"a}t. Die neue Un{\"u}bersichtlichkeit}, series = {Wertzeichen setzen! Wege in die Kommunikationszukunft in Marketing, Medien und PR.}, booktitle = {Wertzeichen setzen! Wege in die Kommunikationszukunft in Marketing, Medien und PR.}, editor = {Anda, Bela and Endr{\"o}s, Stefan and Kalka, Jochen}, address = {M{\"u}nchen}, pages = {162 -- 172}, year = {2010}, language = {de} } @book{KesselFroehling2009, author = {Kessel, Siegfried and Fr{\"o}hling, Dirk}, title = {Notwendig und zun{\"a}chst hinreichend - Mathematik-Know-how f{\"u}r den effektiven Einstieg in ein Ingenieurstudium}, edition = {1}, publisher = {Shaker-Verlag}, address = {Aachen}, isbn = {978-3-8322-8684-2}, year = {2009}, language = {de} } @article{Bontrup2011, author = {Bontrup, Heinz-Josef}, title = {Benzinpreise: Handfestes Politikversagen}, series = {Frankfurter Allgemeine Zeitung}, journal = {Frankfurter Allgemeine Zeitung}, pages = {12}, year = {2011}, language = {de} } @incollection{Ballstaedt2012, author = {Ballstaedt, Steffen-Peter}, title = {Dokumentation 2040: mobil und standardisiert}, series = {Technische Kommunikation im Jahr 2041, 20 Zukunftsszenarien}, booktitle = {Technische Kommunikation im Jahr 2041, 20 Zukunftsszenarien}, editor = {Hennig, J{\"o}rg and Tjarks-Sobhani, Marita}, publisher = {Schmidt-R{\"o}mhild}, address = {L{\"u}beck}, pages = {95 -- 101}, year = {2012}, language = {de} } @article{HaucapDiezOttoetal.2012, author = {Haucap, Justus and Diez, Willi and Otto, Hans-Joachim and Bontrup, Heinz-Josef}, title = {Steigende Benzinpreise: Fehlende Transparenz auf dem {\"O}l- und Kraftstoffmarkt?}, series = {Ifo-Schnelldienst}, volume = {65}, journal = {Ifo-Schnelldienst}, number = {11}, publisher = {Ifo-Institut}, address = {M{\"u}nchen}, pages = {3 -- 15}, year = {2012}, language = {de} } @incollection{Wienbracke2012, author = {Wienbracke, Mike}, title = {Whistleblowing und Art. 5 Abs. 1 GG - Transposition eines EGMR-Themas}, series = {Arbeit - Personal - Soziales. Festschrift zum 65. Geburtstag von Peter Pulte}, booktitle = {Arbeit - Personal - Soziales. Festschrift zum 65. Geburtstag von Peter Pulte}, editor = {Bontrup, Heinz-Josef and Korenke, Thomas and Wienbracke, Mike}, publisher = {Verl. Dr. Kova}, address = {Hamburg}, pages = {21 -- 40}, year = {2012}, language = {de} } @article{Wienbracke2012, author = {Wienbracke, Mike}, title = {Nationales Erbschaft- und Schenkungsteuerrecht im Licht der EuGH-Rechtsprechung}, series = {EWS}, journal = {EWS}, pages = {176 -- 183}, year = {2012}, language = {de} } @book{Wienbracke2012, author = {Wienbracke, Mike}, title = {Allgemeines Verwaltungsrecht}, edition = {3. neu bearb.}, publisher = {C. F. M{\"u}ller}, address = {Heidelberg}, pages = {276}, year = {2012}, language = {de} } @book{Wienbracke2012, author = {Wienbracke, Mike}, title = {Trusts in Deutschland: Zivilrecht - Steuerrecht}, publisher = {Springer Gabler}, address = {Wiesbaden}, pages = {100}, year = {2012}, language = {de} } @article{Wienbracke2012, author = {Wienbracke, Mike}, title = {Innerhalb der Union ist die Freiz{\"u}gigkeit der Arbeitnehmer gew{\"a}hrleistet - eine aktuelle Bestandsaufnahme zu Art. 45 AEUV}, series = {EuR 2012}, journal = {EuR 2012}, number = {5}, pages = {483 -- 510}, year = {2012}, language = {de} } @book{OPUS4-343, title = {Arbeit - Personal - Soziales. Festschrift zum 65. Geburtstag von Peter Pulte}, editor = {Bontrup, Heinz-Josef and Korenke, Thomas and Wienbracke, Mike}, publisher = {Verl. Dr. Kova}, address = {Hamburg}, isbn = {978-3-8300-6030-7}, pages = {222}, year = {2012}, language = {de} } @article{BeckerLeisering2013, author = {Becker, David and Leisering, Benedikt}, title = {Baustelle Energiewende: Bioenergiepotentiale urbaner Brach- und Freifl{\"a}chen}, series = {Forschung Aktuell}, journal = {Forschung Aktuell}, number = {1}, year = {2013}, language = {de} } @book{OPUS4-341, title = {Jahrbuch Seniorenwirtschaft 2012}, editor = {Fretschner, Rainer and Hilbert, Josef and Maelicke, Bernd}, publisher = {Nomos}, address = {Baden-Baden}, isbn = {978-3-8487-0031-8}, year = {2012}, language = {de} } @incollection{Enste2012, author = {Enste, Peter}, title = {Von Funktionalisten, Allroundern und Anspruchsvollen}, series = {Jahrbuch Seniorenwirtschaft 2012}, booktitle = {Jahrbuch Seniorenwirtschaft 2012}, editor = {Fretschner, Rainer and Hilbert, Josef and Maelicke, Bernd}, publisher = {Nomos}, pages = {23 -- 34}, year = {2012}, language = {de} } @incollection{EvansBorchersHilbert2012, author = {Evans-Borchers, Michaela and Hilbert, Josef}, title = {Die Gesellschaft des langen Lebens auf der Suche nach einer Weiterentwicklung der {\"a}rztlichen Qualifikations- und Kompetenzprofile: Ergebnisse einer explorativen Studie im Auftrag der IGW - Initiative Gesundheitswirtschaft e.V. (Berlin)}, series = {Jahrbuch Seniorenwirtschaft 2012}, booktitle = {Jahrbuch Seniorenwirtschaft 2012}, editor = {Fretschner, Rainer and Hilbert, Josef and Maelicke, Bernd}, publisher = {Nomos}, pages = {35 -- 42}, year = {2012}, language = {de} } @incollection{EnsteMerkel2012, author = {Enste, Peter and Merkel, Sebastian}, title = {Ageing in a foreign land: Gesundheit und Pflege {\"a}lterer Menschen mit t{\"u}rkischer Zuwanderungsgeschichte}, series = {Jahrbuch Seniorenwirtschaft 2012}, booktitle = {Jahrbuch Seniorenwirtschaft 2012}, editor = {Fretschner, Rainer and Hilbert, Josef and Maelicke, Bernd}, publisher = {Nomos}, pages = {109 -- 116}, year = {2012}, language = {de} } @article{EvansBorchersHilbert2012, author = {Evans-Borchers, Michaela and Hilbert, Josef}, title = {Zukunftsf{\"a}hige Qualifikations- und Kompetenzprofile f{\"u}r {\"A}rzte in Deutschland: Ergebnisse einer empirischen Studie.}, series = {Public-Health-Forum. Forschung, Lehre, Praxis}, volume = {20}, journal = {Public-Health-Forum. Forschung, Lehre, Praxis}, number = {4}, pages = {15 -- 16}, year = {2012}, language = {de} } @techreport{ButzinWidmaier2012, type = {Working Paper}, author = {Butzin, Anna and Widmaier, Brigitta}, title = {The study of time-space dynamics of knowledge with innovation biographies. Working paper on innovation and space}, number = {07/12}, publisher = {Marburg}, year = {2012}, language = {en} } @article{DavidBarwinskaMalajowiczCoenen2012, author = {David, Alexandra and Barwinska-Malajowicz, Anna and Coenen, Frans}, title = {From brain drain to brain exchange: how to use better highly skilled workers; a conceptual approach.}, series = {Unia Europejska.pl}, volume = {216}, journal = {Unia Europejska.pl}, number = {5}, year = {2012}, language = {en} } @techreport{NordhauseJanzRehfeld2012, type = {Working Paper}, author = {Nordhause-Janz, J{\"u}rgen and Rehfeld, Dieter}, title = {Wirtschaftsbericht Ruhr 2012: Leitm{\"a}rkte und regionale Zukunftsfelder}, address = {M{\"u}hlheim an der Ruhr}, year = {2012}, language = {de} } @techreport{NordhauseJanzRehfeld2012, type = {Working Paper}, author = {Nordhause-Janz, J{\"u}rgen and Rehfeld, Dieter}, title = {Wirtschaftsbericht Ruhr 2012: Methodenhandbuch. Erarbeitet vom Institut Arbeit und Technik im Auftrag der Wirtschaftsf{\"o}rderung metropoleruhr GmbH}, address = {M{\"u}hlheim an der Ruhr}, year = {2012}, language = {de} } @article{Walter2012, author = {Walter, Johann}, title = {Quantit{\"a}tsgleichung - neu zu interpretieren?}, series = {Wirtschaftswissenschaftliches Studium}, journal = {Wirtschaftswissenschaftliches Studium}, number = {3}, pages = {151 -- 155}, year = {2012}, language = {de} } @article{Walter2012, author = {Walter, Johann}, title = {Optimale Umweltregulierung? Statische und dynamische Interpretationen am Beispiel des Klimaschutzes}, series = {Wirtschaftswissenschaftliches Studium}, journal = {Wirtschaftswissenschaftliches Studium}, number = {10}, pages = {550 -- 553}, year = {2012}, language = {de} } @book{OPUS4-328, title = {Innovationsbiographien r{\"a}umliche und sektorale Dynamik}, editor = {Butzin, Anna and Rehfeld, Dieter and Widmaier, Brigitta}, publisher = {Nomos Verlagsgesellschaft}, address = {Baden-Baden}, year = {2012}, language = {de} } @incollection{ButzinRehfeldWidmaier2012, author = {Butzin, Anna and Rehfeld, Dieter and Widmaier, Brigitta}, title = {Innovationsbiographien. Eine Zwischenbilanz}, series = {Innovationsbiographien. R{\"a}umliche und sektorale Dynamik}, booktitle = {Innovationsbiographien. R{\"a}umliche und sektorale Dynamik}, editor = {Butzin, Anna and Rehfeld, Dieter and Widmaier, Brigitta}, publisher = {Nomos Verlagsgesellschaft}, address = {Baden-Baden}, pages = {251 -- 255}, year = {2012}, language = {de} } @incollection{Butzin2012, author = {Butzin, Anna}, title = {Wissensdynamiken und Innovationsstrategien im Tourismussektor. Eine Studie mit Innovationsbiographien}, series = {Innovationsbiographien. R{\"a}umliche und sektorale Dynamik}, booktitle = {Innovationsbiographien. R{\"a}umliche und sektorale Dynamik}, editor = {Butzin, Anna and Rehfeld, Dieter and Widmaier, Brigitta}, publisher = {Nomos Verlagsgesellschaft}, address = {Baden-Baden}, pages = {179 -- 198}, year = {2012}, language = {de} } @incollection{Rehfeld2012, author = {Rehfeld, Dieter}, title = {Innovationsbiographien in der Bauwirtschaft}, series = {Innovationsbiographien. R{\"a}umliche und sektorale Dynamik}, booktitle = {Innovationsbiographien. R{\"a}umliche und sektorale Dynamik}, editor = {Butzin, Anna and Rehfeld, Dieter and Widmaier, Brigitta}, publisher = {Nomos Verlagsgesellschaft}, address = {Baden-Baden}, pages = {157 -- 177}, year = {2012}, language = {de} } @incollection{ButzinRehfeld2012, author = {Butzin, Anna and Rehfeld, Dieter}, title = {Forschungs- und Entwicklungsdienstleister im Innovationssystem der Nanotechnologie: drei Innovationsbiographien}, series = {Innovationsbiographien. R{\"a}umliche und sektorale Dynamik}, booktitle = {Innovationsbiographien. R{\"a}umliche und sektorale Dynamik}, editor = {Butzin, Anna and Rehfeld, Dieter and Widmaier, Brigitta}, publisher = {Nomos Verlagsgesellschaft}, address = {Baden-Baden}, pages = {139 -- 156}, year = {2012}, language = {de} } @incollection{Butzin2012, author = {Butzin, Anna}, title = {Aufbau und Forschungsprozess von Innovationsbiographien}, series = {Innovationsbiographien. R{\"a}umliche und sektorale Dynamik}, booktitle = {Innovationsbiographien. R{\"a}umliche und sektorale Dynamik}, editor = {Butzin, Anna and Rehfeld, Dieter and Widmaier, Brigitta}, publisher = {Nomos Verlagsgesellschaft}, address = {Baden-Baden}, pages = {123 -- 137}, year = {2012}, language = {de} } @incollection{Butzin2012, author = {Butzin, Anna}, title = {Das konzeptionelle Umfeld von Innovationsbiographien}, series = {Innovationsbiographien. R{\"a}umliche und sektorale Dynamik}, booktitle = {Innovationsbiographien. R{\"a}umliche und sektorale Dynamik}, editor = {Butzin, Anna and Rehfeld, Dieter and Widmaier, Brigitta}, publisher = {Nomos Verlagsgesellschaft}, address = {Baden-Baden}, pages = {109 -- 122}, year = {2012}, language = {de} } @article{LoeffertBlumEvansBorchers2013, author = {L{\"o}ffert, Sabine and Blum, Karl and Evans-Borchers, Michaela}, title = {Das Krankenhaus im Zentrum: NRW-Innovationspanel; Strategien f{\"u}r innovative Versorgungsangebote und zukunftsorientierte Gesch{\"a}ftsfelder}, series = {f\&w - f{\"u}hren und wirtschaften im Krankenhaus}, journal = {f\&w - f{\"u}hren und wirtschaften im Krankenhaus}, number = {1}, pages = {14 -- 17}, year = {2013}, language = {de} } @book{FloegelGaertnerKulkeetal.2013, author = {Fl{\"o}gel, Franz and G{\"a}rtner, Stefan and Kulke, Elmar and Warland, Martin}, title = {Die wirtschaftliche St{\"a}rke des Einzelhandels. Studie im Auftrag des Bundesministeriums f{\"u}r Wirtschaft und Technologie}, publisher = {Institut Arbeit und Technik, Humboldt-Universit{\"a}t zu Berlin}, address = {Gelsenkirchen, Berlin}, year = {2013}, language = {de} } @inproceedings{MarianHamburg2013, author = {Marian, Marius and Hamburg, Ileana}, title = {Cooperative e-learning approach based on cloud computing}, series = {Proceedings of the IASTED International Conference "Web-based education (WBE 2013)", Februrary 13-15, 2013}, booktitle = {Proceedings of the IASTED International Conference "Web-based education (WBE 2013)", Februrary 13-15, 2013}, address = {Innsbruck}, pages = {838 -- 843}, year = {2013}, language = {en} } @article{Korff2015, author = {Korff, Sandra}, title = {Die rechtlichen Rahmenbedingungen f{\"u}r die Vereinbarkeit von Beruf und Familie in der h{\"a}uslichen Pflege}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:1010-opus4-2721}, pages = {28}, year = {2015}, abstract = {Der Aufsatz behandelt die Frage, in welcher Weise das Sozialrecht Regelungen zur Vereinbarkeit von Beruf und Familie im Falle h{\"a}uslicher Pflege enth{\"a}lt.}, subject = {Hauspflege}, language = {de} } @masterthesis{Moeller2015, type = {Bachelor Thesis}, author = {M{\"o}ller, Frank}, title = {Wirtschaftliche Bedeutung von Urheberrechten und Schutz des geistigen Eigentums in der Musikwirtschaft}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:1010-opus4-4653}, school = {Westf{\"a}lische Hochschule Gelsenkirchen Bocholt Recklinghausen}, pages = {69}, year = {2015}, abstract = {Die Bachelorarbeit beschreibt die wirtschaftliche Bedeutung von Urheberrechten gerade auch in Bezug auf die innovative Musikproduktion, nimmt Bezug auf die zahlreichen technologischen Marktver{\"a}nderungen, beschreibt das damit zusammenh{\"a}ngende Ph{\"a}nomen der Musikpiraterie, geht auf neue Preismodelle der Anbieter zur Verhinderung eben dieser marktlichen Ver{\"a}nderungen ein und schließt mit einem {\"U}berblick {\"u}ber den Rechtsschutz im Urheberrecht sowie die durch den Gesetzgeber und die Gerichte erfolgten Ver{\"a}nderungen im Bereich des Urheberrechtsgesetzes.}, subject = {Urheberrecht}, language = {de} } @techreport{LehnerKruegerCharleWeishaupt2013, type = {Working Paper}, author = {Lehner, Franz and Kr{\"u}ger-Charl{\´e}, Michael and Weishaupt, Karin}, title = {Cultnature: Bio-Montan-Park NRW; ein Projekt zur nachhaltigen Stadt- und Regionalentwicklung in nordrhein-westf{\"a}lischen Bergbau-R{\"u}ckzugsgebieten; Konzeptstudie - Teil 2 aus dem Zwischenbericht nach der 1. Projektphase}, publisher = {Institut Arbeit und Technik}, address = {Gelsenkirchen}, year = {2013}, language = {de} } @article{Pohlmann2013, author = {Pohlmann, Norbert}, title = {Daten gegen Diebstahl sichern}, series = {IHK-Wirtschaftsspiegel}, journal = {IHK-Wirtschaftsspiegel}, number = {2}, pages = {12 -- 18}, year = {2013}, language = {de} } @article{Bontrup2013, author = {Bontrup, Heinz-Josef}, title = {Warum die Kritiker irren. Die Forderung nach der 30-Stunden-Woche ist richtig}, series = {Die ZEIT online}, journal = {Die ZEIT online}, year = {2013}, language = {de} } @inproceedings{Geiger2013, author = {Geiger, Gerhard}, title = {Leak Detection Technologies and Emergency Shutdown Protocols}, series = {Proceedings 8th Pipeline Technology Conference, 18.-20. M{\"a}rz 2013}, booktitle = {Proceedings 8th Pipeline Technology Conference, 18.-20. M{\"a}rz 2013}, address = {Hannover}, year = {2013}, language = {en} } @misc{DavidRehfeldCoenen2013, author = {David, Alexandra and Rehfeld, Dieter and Coenen, Frans}, title = {Using alumni networks for regions - BRAND. Border Region Alumni Network Development}, publisher = {Institute for Work and Technology}, address = {Gelsenkirchen}, year = {2013}, language = {en} } @misc{FloegelGaertnerKulke2013, author = {Fl{\"o}gel, Franz and G{\"a}rtner, Stefan and Kulke, Elmar}, title = {Die wirtschaftliche St{\"a}rke des kooperierenden Einzelhandels: Kurzfassung. Studie im Auftrag des Bundesministeriums f{\"u}r Wirtschaft und Technologie}, year = {2013}, language = {de} } @inproceedings{Hamburg2013, author = {Hamburg, Ileana}, title = {Facilitating learning and knowledge transfer through mentoring}, series = {CSEDU 2013, 5 th International Conference on Computer Supported Education, 06.-08.05.2013}, booktitle = {CSEDU 2013, 5 th International Conference on Computer Supported Education, 06.-08.05.2013}, publisher = {CSEDU}, address = {Aachen}, year = {2013}, language = {en} } @article{EvansBorchersBraeutigamHilbert2013, author = {Evans-Borchers, Michaela and Br{\"a}utigam, Christoph and Hilbert, Josef}, title = {Berufsbilder im Gesundheitssektor: vom "Berufebasteln" zur strategischen Berufungspolitik.}, series = {WISO direkt: Analysen und Konzepte zur Wirtschafts- und Sozialpolitik}, journal = {WISO direkt: Analysen und Konzepte zur Wirtschafts- und Sozialpolitik}, number = {April}, publisher = {Friedrich-Ebert-Stiftung}, address = {Bonn}, year = {2013}, language = {de} }