TY - JOUR AU - A. M. Stakhy TI - Uniform approximation of sets and proximality in partially ordered dynamical systems JO - Differencialʹnye uravneniâ PY - 1969 SP - 1101 EP - 1106 VL - 5 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1969_5_6_a12/ LA - ru ID - DE_1969_5_6_a12 ER -