TY - BOOK A1 - Kasper, Uwe T1 - On first class sonstraints of simple cosmological models in Einstein's gravity theory T2 - Preprint / Universität Potsdam, Institut für Mathematik Y1 - 1994 UR - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/28575 VL - 1994, 10 PB - Univ. CY - Potsdam ER -