TY - JOUR AU - M. M. Zainulabidov TI - On a problem with nonlocal boundary conditions when the lines of change of type in a mixed domain are perpendicular JO - Differencialʹnye uravneniâ PY - 1994 SP - 832 EP - 837 VL - 30 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1994_30_5_a11/ LA - ru ID - DE_1994_30_5_a11 ER -