%0 Journal Article %A S. Kh. Aranson %T Topological invariants of vector fields in a~disc on a~plane with limit sets of Cantor type %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1990 %P 157-158 %V 45 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_1990_45_4_a3/ %G en %F RM_1990_45_4_a3