%0 Journal Article %A E. V. Zhuzhoma %T A topological classification of foliations described by one-dimensional Pfaffian forms on an $n$-dimensional torus %J Differencialʹnye uravneniâ %D 1981 %P 1385-1393 %V 17 %N 8 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1981_17_8_a3/ %G ru %F DE_1981_17_8_a3