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@article{IVM_1982_1_a2, author = {M. I. Dyachenko}, title = {On some conditions for local smoothness of functions}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {10--18}, publisher = {mathdoc}, number = {1}, year = {1982}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1982_1_a2/} }
M. I. Dyachenko. On some conditions for local smoothness of functions. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 1 (1982), pp. 10-18. http://geodesic.mathdoc.fr/item/IVM_1982_1_a2/