TY - JOUR AU - A. P. Suetov TI - A problem of Lions for systems describable by a problem of Neumann JO - Differencialʹnye uravneniâ PY - 1987 SP - 499 EP - 508 VL - 23 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1987_23_3_a17/ LA - ru ID - DE_1987_23_3_a17 ER -