TY - JOUR AU - G. I. Shishkin TI - Grid approximation of a~wave equation singularly perturbed with respect to the space variable JO - Izvestiâ vysših učebnyh zavedenij. Matematika PY - 2001 SP - 67 EP - 81 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IVM_2001_1_a6/ LA - ru ID - IVM_2001_1_a6 ER -