TY - JOUR AU - M. M. Anzin TI - On variations of positive quadratic forms (with applications to the study of perfect forms) JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1991 SP - 11 EP - 26 VL - 196 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TM_1991_196_a1/ LA - ru ID - TM_1991_196_a1 ER -