@article{IVM_1992_1_a11,
     author = {K. V. Runovskii},
     title = {An estimate for an integral modulus of smoothness},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {78--80},
     year = {1992},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1992_1_a11/}
}