Voir la notice de l'article provenant de la source Math-Net.Ru
@article{SJIM_2020_23_4_a10, author = {M. V. Shamolin}, title = {Families of portraits of some pendulum-like systems in dynamics}, journal = {Sibirskij \v{z}urnal industrialʹnoj matematiki}, pages = {144--156}, publisher = {mathdoc}, volume = {23}, number = {4}, year = {2020}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/SJIM_2020_23_4_a10/} }
M. V. Shamolin. Families of portraits of some pendulum-like systems in dynamics. Sibirskij žurnal industrialʹnoj matematiki, Tome 23 (2020) no. 4, pp. 144-156. http://geodesic.mathdoc.fr/item/SJIM_2020_23_4_a10/