Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{PMFA_1958__3_2_a4, author = {Gregor, Ji\v{r}{\'\i}}, title = {Dynamick\'e syst\'emy s regul\'arn{\'\i} pravou stranou. {I}}, journal = {Pokroky matematiky, fyziky a astronomie}, pages = {153--160}, publisher = {mathdoc}, volume = {03}, number = {2}, year = {1958}, zbl = {0081.30802}, language = {cz}, url = {http://geodesic.mathdoc.fr/item/PMFA_1958__3_2_a4/} }
Gregor, Jiří. Dynamické systémy s regulární pravou stranou. I. Pokroky matematiky, fyziky a astronomie, Tome 03 (1958) no. 2, pp. 153-160. http://geodesic.mathdoc.fr/item/PMFA_1958__3_2_a4/