TY - JOUR AU - A. B. Levin TI - Characteristic polynomials of inverse differential modules and some properties of JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1980 SP - 217 EP - 218 VL - 35 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/RM_1980_35_1_a7/ LA - en ID - RM_1980_35_1_a7 ER -