TY - JOUR AU - P. P. Zabreiko AU - T. A. Makarevich TI - A generalization of the Banach--Cacciopolli principle to operators in pseudometric spaces JO - Differencialʹnye uravneniâ PY - 1987 SP - 1497 EP - 1504 VL - 23 IS - 9 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1987_23_9_a2/ LA - ru ID - DE_1987_23_9_a2 ER -