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@article{DE_1990_26_4_a24, author = {A. I. Perov and A. A. Tananika}, title = {On a geometric result in problems of periodic optimization}, journal = {Differencialʹnye uravneni\^a}, pages = {718--721}, publisher = {mathdoc}, volume = {26}, number = {4}, year = {1990}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1990_26_4_a24/} }
A. I. Perov; A. A. Tananika. On a geometric result in problems of periodic optimization. Differencialʹnye uravneniâ, Tome 26 (1990) no. 4, pp. 718-721. http://geodesic.mathdoc.fr/item/DE_1990_26_4_a24/