@article{VMUMM_1989_4_a3,
     author = {T. P. Lukashenko},
     title = {On the modulus of continuity of a conjugate function on subsets},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {13--17},
     year = {1989},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1989_4_a3/}
}