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@article{DE_2001_37_4_a4, author = {V. V. Filippov}, title = {Remarks on {Guiding} {Functions} and {Periodic} {Solutions}}, journal = {Differencialʹnye uravneni\^a}, pages = {458--469}, publisher = {mathdoc}, volume = {37}, number = {4}, year = {2001}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_2001_37_4_a4/} }
V. V. Filippov. Remarks on Guiding Functions and Periodic Solutions. Differencialʹnye uravneniâ, Tome 37 (2001) no. 4, pp. 458-469. http://geodesic.mathdoc.fr/item/DE_2001_37_4_a4/