Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{CMUC_1967__8_3_a5, author = {Kat\v{e}tov, Miroslav}, title = {A theorem on mappings}, journal = {Commentationes Mathematicae Universitatis Carolinae}, pages = {431--433}, publisher = {mathdoc}, volume = {08}, number = {3}, year = {1967}, mrnumber = {0229228}, zbl = {0206.51901}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CMUC_1967__8_3_a5/} }
Katětov, Miroslav. A theorem on mappings. Commentationes Mathematicae Universitatis Carolinae, Tome 08 (1967) no. 3, pp. 431-433. http://geodesic.mathdoc.fr/item/CMUC_1967__8_3_a5/