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@article{DE_2002_38_3_a18, author = {E. E. Barbashina}, title = {A {Compact} {Formula} for the {Third} {Variation} and {Necessary} {Optimality} {Conditions}}, journal = {Differencialʹnye uravneni\^a}, pages = {414--415}, publisher = {mathdoc}, volume = {38}, number = {3}, year = {2002}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_2002_38_3_a18/} }
E. E. Barbashina. A Compact Formula for the Third Variation and Necessary Optimality Conditions. Differencialʹnye uravneniâ, Tome 38 (2002) no. 3, pp. 414-415. http://geodesic.mathdoc.fr/item/DE_2002_38_3_a18/