TY - JOUR AU - V. A. Terletskii TI - A~ariational maximum principle in controlled systems of one-dimensional hyperbolic equations JO - Izvestiâ vysših učebnyh zavedenij. Matematika PY - 1999 SP - 82 EP - 90 IS - 12 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IVM_1999_12_a10/ LA - ru ID - IVM_1999_12_a10 ER -