%0 Journal Article %A N. V. Spichekova %T On the Behavior of Integral Surfaces of a Pfaff Equation with a Nonclosed Singular Curve %J Differencialʹnye uravneniâ %D 2005 %P 1429-1432 %V 41 %N 10 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_2005_41_10_a20/ %G ru %F DE_2005_41_10_a20