TY - JOUR AU - V. S. Mokeǐchev TI - Reconstruction of coefficients in linear mathematical models, and nonlinear boundary problems JO - Izvestiâ vysših učebnyh zavedenij. Matematika PY - 1989 SP - 20 EP - 28 IS - 7 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IVM_1989_7_a3/ LA - ru ID - IVM_1989_7_a3 ER -