TY  - JOUR
AU  - Stanley, Donald
TI  - On the Lusternik-Schnirelmann Category of Maps
JO  - Canadian journal of mathematics
PY  - 2002
SP  - 608
EP  - 633
VL  - 54
IS  - 3
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CJM-2002-022-6/
DO  - 10.4153/CJM-2002-022-6
ID  - 10_4153_CJM_2002_022_6
ER  -