TY - JOUR AU - M. P. Sapagovas AU - R. J. Čiegis TI - On some boundary value problems with a nonlocal condition JO - Differencialʹnye uravneniâ PY - 1987 SP - 1268 EP - 1274 VL - 23 IS - 7 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1987_23_7_a17/ LA - ru ID - DE_1987_23_7_a17 ER -