Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MM2_1987__58_155209, author = {M\'onica Clapp and Luis Montejano}, title = {Lusternik-Schnirelmann category and minimal coverings with contractible sets.}, journal = {Manuscripta mathematica}, pages = {37--46}, publisher = {mathdoc}, volume = {58}, year = {1987}, zbl = {0643.55002}, url = {http://geodesic.mathdoc.fr/item/MM2_1987__58_155209/} }
Mónica Clapp; Luis Montejano. Lusternik-Schnirelmann category and minimal coverings with contractible sets.. Manuscripta mathematica, Tome 58 (1987), pp. 37-46. http://geodesic.mathdoc.fr/item/MM2_1987__58_155209/