TY - JOUR AU - A. G. Prudkovskii TI - The WKB method for a system of Schrödinger equations and the order of its accuracy in the case of characteristics of variable multiplicity JO - Differencialʹnye uravneniâ PY - 1979 SP - 1522 EP - 1525 VL - 15 IS - 8 UR - http://geodesic.mathdoc.fr/item/DE_1979_15_8_a18/ LA - ru ID - DE_1979_15_8_a18 ER -