TY - JOUR AU - M. V. Tryamkin TI - An Estimate of the Modulus of a Family of Curves on an Abstract Surface over a Cylinder JO - Matematičeskie zametki PY - 2020 SP - 149 EP - 153 VL - 107 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_2020_107_1_a12/ LA - ru ID - MZM_2020_107_1_a12 ER -