@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},
     year = {1982},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1982_1_a2/}
}