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@article{DAN_1960_135_4_a3, author = {V. P. Il'in}, title = {Some inequalities for differentiable functions of several variables}, journal = {Doklady Akademii Nauk}, pages = {779--782}, publisher = {mathdoc}, volume = {135}, number = {4}, year = {1960}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1960_135_4_a3/} }
V. P. Il'in. Some inequalities for differentiable functions of several variables. Doklady Akademii Nauk, Tome 135 (1960) no. 4, pp. 779-782. http://geodesic.mathdoc.fr/item/DAN_1960_135_4_a3/