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@article{DE_1986_22_6_a27, author = {P. G. Lasy}, title = {Uniqueness of the characteristic vectors of the solutions of a linear {Pfaffian} system}, journal = {Differencialʹnye uravneni\^a}, pages = {1084--1086}, publisher = {mathdoc}, volume = {22}, number = {6}, year = {1986}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1986_22_6_a27/} }
P. G. Lasy. Uniqueness of the characteristic vectors of the solutions of a linear Pfaffian system. Differencialʹnye uravneniâ, Tome 22 (1986) no. 6, pp. 1084-1086. http://geodesic.mathdoc.fr/item/DE_1986_22_6_a27/