Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{PMFA_1958__3_3_a2, author = {Gregor, Ji\v{r}{\'\i}}, title = {Dynamick\'e syst\'emy s regul\'arn{\'\i} pravou stranou. {II}}, journal = {Pokroky matematiky, fyziky a astronomie}, pages = {266--270}, publisher = {mathdoc}, volume = {03}, number = {3}, year = {1958}, zbl = {0086.07301}, language = {cz}, url = {http://geodesic.mathdoc.fr/item/PMFA_1958__3_3_a2/} }
Gregor, Jiří. Dynamické systémy s regulární pravou stranou. II. Pokroky matematiky, fyziky a astronomie, Tome 03 (1958) no. 3, pp. 266-270. http://geodesic.mathdoc.fr/item/PMFA_1958__3_3_a2/