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@article{MZM_1971_9_5_a2, author = {I. M. Kolodii and F. Hil'debrand}, title = {Some properties of the modulus of continuity}, journal = {Matemati\v{c}eskie zametki}, pages = {495--500}, publisher = {mathdoc}, volume = {9}, number = {5}, year = {1971}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1971_9_5_a2/} }
I. M. Kolodii; F. Hil'debrand. Some properties of the modulus of continuity. Matematičeskie zametki, Tome 9 (1971) no. 5, pp. 495-500. http://geodesic.mathdoc.fr/item/MZM_1971_9_5_a2/