@article{DE_1972_8_8_a5,
     author = {Yu. A. Klokov},
     title = {Uniqueness of the solution of boundary value problems for systems of two first order differential equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1377--1385},
     publisher = {mathdoc},
     volume = {8},
     number = {8},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1972_8_8_a5/}
}