@article{GDZPPN002418274, title = {On the Lusternik-Schnirelmann Category of Lie Groups: II.}, journal = {Mathematische Zeitschrift}, volume = {147}, year = {1976}, pages = {143-148}, zbl = {0343.55007}, url = {http://dml.mathdoc.fr/item/GDZPPN002418274} }
Singhof, Wilhelm. On the Lusternik-Schnirelmann Category of Lie Groups: II.. Mathematische Zeitschrift, Tome 147 (1976) pp. 143-148. http://gdmltest.u-ga.fr/item/GDZPPN002418274/