TY - JOUR AU - G. V. Kuz'mina TI - The module problem for families of classes of curves in a circular ring JO - Zapiski Nauchnykh Seminarov POMI PY - 1985 SP - 115 EP - 127 VL - 144 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ZNSL_1985_144_a10/ LA - ru ID - ZNSL_1985_144_a10 ER -