TY - JOUR AU - A. V. Medvedev TI - Existence of an infinitely differentiable concave majorant of a modulus of continuity JO - Vestnik Moskovskogo universiteta. Matematika, mehanika PY - 2001 SP - 11 EP - 15 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/VMUMM_2001_5_a1/ LA - ru ID - VMUMM_2001_5_a1 ER -