TY - JOUR AU - M. E. Lerner TI - Maximum and uniqueness principles for the solutions of boundary value problems of certain equations of mixed type JO - Izvestiâ vysših učebnyh zavedenij. Matematika PY - 1977 SP - 71 EP - 83 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IVM_1977_2_a9/ LA - ru ID - IVM_1977_2_a9 ER -