@article{DE_1985_21_10_a11,
     author = {V. V. Strygin and V. A. Sobolev and E. Ya. Gorelova and \`E. M. Fridman},
     title = {Integral manifolds of singularly perturbed systems and some of their applications},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1723--1726},
     publisher = {mathdoc},
     volume = {21},
     number = {10},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1985_21_10_a11/}
}