TY - JOUR AU - B. S. Kalitin TI - On the Aizerman Problem for Systems of Two Differential Equations JO - Matematičeskie zametki PY - 2019 SP - 240 EP - 250 VL - 105 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_2019_105_2_a5/ LA - ru ID - MZM_2019_105_2_a5 ER -