TY  - JOUR
AU  - Michael Heller
AU  - Wiesław Sasin
TI  - The closed Friedman world model with the initial and final singularities as a non-commutative space
JO  - Banach Center Publications
PY  - 1997
SP  - 153
EP  - 161
VL  - 41
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/-41-1-153-161/
DO  - 10.4064/-41-1-153-161
LA  - en
ID  - 10_4064__41_1_153_161
ER  -