%0 Journal Article %A S. N. Kustarov %T An estimate of the sector of absolute stability of a certain third order nonlinear equation %J Differencialʹnye uravneniâ %D 1972 %P 1892-1893 %V 8 %N 10 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1972_8_10_a23/ %G ru %F DE_1972_8_10_a23