TY - JOUR AU - I. M. Gel'fand AU - V. A. Ponomarev TI - Free modular lattices and their representations JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1974 SP - 1 EP - 56 VL - 29 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/RM_1974_29_6_a0/ LA - en ID - RM_1974_29_6_a0 ER -