@article{VMUMM_2002_6_a3,
     author = {A. Yu. Napedenina},
     title = {Direct and inverse theorems for a nonsymmetric generalized modulus of smoothness},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {19--25},
     year = {2002},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2002_6_a3/}
}