@article{DE_1984_20_11_a0,
     author = {\`E. I. Grudo},
     title = {Stability of completely integrable linear homogeneous {Pfaffian} systems},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1843--1852},
     year = {1984},
     volume = {20},
     number = {11},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1984_20_11_a0/}
}