TY - JOUR AU - V. A. Sevastyanov TI - The Riemann method for a~three-dimensional hyperbolic equation of third order JO - Izvestiâ vysših učebnyh zavedenij. Matematika PY - 1997 SP - 69 EP - 73 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IVM_1997_5_a9/ LA - ru ID - IVM_1997_5_a9 ER -