%0 Journal Article %A E. A. Chirkova %T Investigation of a 3D system of differential equations with non-isolated %J Čelâbinskij fiziko-matematičeskij žurnal %D 2018 %P 332-337 %V 3 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/CHFMJ_2018_3_3_a5/ %G ru %F CHFMJ_2018_3_3_a5