Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{CMJ_2002__52_1_a0, author = {Manch\'on, P. M. G.}, title = {Hypersurfaces in $\mathbb R^n$ and critical points in their external region}, journal = {Czechoslovak Mathematical Journal}, pages = {1--9}, publisher = {mathdoc}, volume = {52}, number = {1}, year = {2002}, mrnumber = {1885451}, zbl = {1017.57014}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CMJ_2002__52_1_a0/} }
Manchón, P. M. G. Hypersurfaces in $\mathbb R^n$ and critical points in their external region. Czechoslovak Mathematical Journal, Tome 52 (2002) no. 1, pp. 1-9. http://geodesic.mathdoc.fr/item/CMJ_2002__52_1_a0/