@article{TM_1988_181_a6,
     author = {V. I. Kolyada},
     title = {On the relations between moduli of continuity in various metrics},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {117--136},
     publisher = {mathdoc},
     volume = {181},
     year = {1988},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_1988_181_a6/}
}