%0 Journal Article %A E. Z. Borevich %T Conditions for topological equivalence of two-dimensional Morse--Smale diffeomorphisms %J Differencialʹnye uravneniâ %D 1981 %P 1481-1482 %V 17 %N 8 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1981_17_8_a12/ %G ru %F DE_1981_17_8_a12