TY - JOUR AU - A. K. Ratyni TI - On classical solvability of a non-local boundary value problem for an elliptic equation of the second order.~I JO - Izvestiâ vysših učebnyh zavedenij. Matematika PY - 1994 SP - 59 EP - 66 IS - 11 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IVM_1994_11_a7/ LA - ru ID - IVM_1994_11_a7 ER -