Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{PMFA_1957__2_2_a0, author = {H\'ajek, Otomar}, title = {Singularity diferenci\'aln{\'\i} rovnice. {II}}, journal = {Pokroky matematiky, fyziky a astronomie}, pages = {137--143}, publisher = {mathdoc}, volume = {02}, number = {2}, year = {1957}, language = {cz}, url = {http://geodesic.mathdoc.fr/item/PMFA_1957__2_2_a0/} }
Hájek, Otomar. Singularity diferenciální rovnice. II. Pokroky matematiky, fyziky a astronomie, Tome 02 (1957) no. 2, pp. 137-143. http://geodesic.mathdoc.fr/item/PMFA_1957__2_2_a0/