TY - JOUR AU - A. S. Demidov AU - A. S. Kochurov AU - A. Yu. Popov TI - To the problem of the recovery of nonlinearities in equations of mathematical physics JO - Trudy Seminara im. I.G. Petrovskogo PY - 2009 SP - 74 EP - 123 VL - 27 IS - 27 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TSP_2009_27_27_a2/ LA - ru ID - TSP_2009_27_27_a2 ER -