Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{PMFA_1956__1_5-6_a2, author = {H\'ajek, Otomar}, title = {Singularity diferenci\'aln{\'\i} rovnice}, journal = {Pokroky matematiky, fyziky a astronomie}, pages = {551--559}, publisher = {mathdoc}, volume = {01}, number = {5-6}, year = {1956}, language = {cz}, url = {http://geodesic.mathdoc.fr/item/PMFA_1956__1_5-6_a2/} }
Hájek, Otomar. Singularity diferenciální rovnice. Pokroky matematiky, fyziky a astronomie, Tome 01 (1956) no. 5-6, pp. 551-559. http://geodesic.mathdoc.fr/item/PMFA_1956__1_5-6_a2/