TY - JOUR AU - S. V. Zhestkov TI - The Unique Solvability of the Doubly Periodic Problem for a System of Nonlinear Telegraph Partial Differential Equations JO - Differencialʹnye uravneniâ PY - 2001 SP - 223 EP - 227 VL - 37 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_2001_37_2_a9/ LA - ru ID - DE_2001_37_2_a9 ER -