TY - JOUR AU - N. E. Tsapenko TI - New formulas for the approximate solution of a one-dimensional wave equation JO - Differencialʹnye uravneniâ PY - 1989 SP - 1941 EP - 1946 VL - 25 IS - 11 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1989_25_11_a15/ LA - ru ID - DE_1989_25_11_a15 ER -