TY - JOUR AU - E. A. Novikov TI - The solution of certain equations with variational derivatives JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1961 VL - 16 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/RM_1961_16_2_a14/ LA - ru ID - RM_1961_16_2_a14 ER -