Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{CMUC_1968__9_4_a7, author = {Tom\'a\v{s}ek, Stanislav}, title = {Certain generalizations of the {Kat\v{e}tov} theorem}, journal = {Commentationes Mathematicae Universitatis Carolinae}, pages = {573--581}, publisher = {mathdoc}, volume = {09}, number = {4}, year = {1968}, mrnumber = {0261339}, zbl = {0174.17601}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CMUC_1968__9_4_a7/} }
Tomášek, Stanislav. Certain generalizations of the Katětov theorem. Commentationes Mathematicae Universitatis Carolinae, Tome 09 (1968) no. 4, pp. 573-581. http://geodesic.mathdoc.fr/item/CMUC_1968__9_4_a7/