Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{CMUC_1977__18_4_a7, author = {Svoboda, Karel}, title = {Remark to the characterization of the sphere in $E^4$}, journal = {Commentationes Mathematicae Universitatis Carolinae}, pages = {715--722}, publisher = {mathdoc}, volume = {18}, number = {4}, year = {1977}, mrnumber = {0493901}, zbl = {0368.53039}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CMUC_1977__18_4_a7/} }
Svoboda, Karel. Remark to the characterization of the sphere in $E^4$. Commentationes Mathematicae Universitatis Carolinae, Tome 18 (1977) no. 4, pp. 715-722. http://geodesic.mathdoc.fr/item/CMUC_1977__18_4_a7/