@article{DE_1991_27_9_a6,
     author = {V. A. Golubeva and V. P. Leksin},
     title = {Exponential representation of solutions of {Pfaffian} systems (the one-parameter case)},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1526--1538},
     publisher = {mathdoc},
     volume = {27},
     number = {9},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1991_27_9_a6/}
}