%0 Journal Article %A N. N. Brushlinskaya %T Versal family of vector fields of a Poincaré domain %J Funkcionalʹnyj analiz i ego priloženiâ %D 1970 %P 6-13 %V 4 %N 1 %U http://geodesic.mathdoc.fr/item/FAA_1970_4_1_a1/ %G ru %F FAA_1970_4_1_a1