%0 Journal Article %A B. S. Kalitin %T On the Aizerman Problem for Systems of Two Differential Equations %J Matematičeskie zametki %D 2019 %P 240-250 %V 105 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_2019_105_2_a5/ %G ru %F MZM_2019_105_2_a5