%0 Journal Article %A K. Eshmuradov %T Structural stability conditions and classification of the cells of a three-dimensional dynamical system without closed orbits %J Doklady Akademii Nauk %D 1968 %P 1283-1286 %V 182 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1968_182_6_a11/ %G ru %F DAN_1968_182_6_a11