@article{DAN_1965_162_1_a2,
     author = {V. V. Zhuk},
     title = {Some modifications of the concept of modulus of smoothness and their applications},
     journal = {Doklady Akademii Nauk},
     pages = {19--22},
     publisher = {mathdoc},
     volume = {162},
     number = {1},
     year = {1965},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1965_162_1_a2/}
}