TY  - JOUR
AU  - Stephan Stolz
TI  - The level of real projective spaces.
JO  - Commentarii mathematici Helvetici
PY  - 1989
SP  - 661
EP  - 674
VL  - 64
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/CMH_1989__64_1_140177/
ID  - CMH_1989__64_1_140177
ER  -