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@article{DAN_1961_138_1_a8, author = {A. Yu. Levin}, title = {Some estimates for a differentiable function}, journal = {Doklady Akademii Nauk}, pages = {37--38}, publisher = {mathdoc}, volume = {138}, number = {1}, year = {1961}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1961_138_1_a8/} }
A. Yu. Levin. Some estimates for a differentiable function. Doklady Akademii Nauk, Tome 138 (1961) no. 1, pp. 37-38. http://geodesic.mathdoc.fr/item/DAN_1961_138_1_a8/