Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1978_241_2_a4, author = {A. A. Martynyuk}, title = {On a theorem of the type of {Bogolyubov's} first averaging theorem}, journal = {Doklady Akademii Nauk}, pages = {279--281}, publisher = {mathdoc}, volume = {241}, number = {2}, year = {1978}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1978_241_2_a4/} }
A. A. Martynyuk. On a theorem of the type of Bogolyubov's first averaging theorem. Doklady Akademii Nauk, Tome 241 (1978) no. 2, pp. 279-281. http://geodesic.mathdoc.fr/item/DAN_1978_241_2_a4/