@article{DE_1985_21_1_a22,
     author = {V. S. Vinogradov},
     title = {A boundary value problem for pseudosymmetric systems},
     journal = {Differencialʹnye uravneni\^a},
     pages = {161--163},
     publisher = {mathdoc},
     volume = {21},
     number = {1},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1985_21_1_a22/}
}