@techreport{DalitzGroetschelLueggeretal.1995, author = {Wolfgang Dalitz and Martin Gr{\"o}tschel and Joachim L{\"u}gger and Wolfram Sperber}, title = {Distributed Information System for Mathematics (Available only in german, TR 95-06)}, institution = {ZIB}, address = {Takustr. 7, 14195 Berlin}, number = {TR-95-07}, language = {eng}, year = {1995} }