%0 Journal Article %A S. S. Mamonov %A A. O. Harlamova %T Determination of the conditions of existence of limit cycles of a first-order systems with cylindrical phase space %J Žurnal Srednevolžskogo matematičeskogo obŝestva %D 2017 %P 67-76 %V 19 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/SVMO_2017_19_1_a6/ %G ru %F SVMO_2017_19_1_a6