TY - JOUR AU - S. A. Brykalov TI - A nonlinear boundary value problem with break points of solutions JO - Differencialʹnye uravneniâ PY - 1989 SP - 2066 EP - 2075 VL - 25 IS - 12 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1989_25_12_a4/ LA - ru ID - DE_1989_25_12_a4 ER -