@article{DE_1981_17_1_a11,
     author = {N. M. Kurbatova},
     title = {On the {Dirichlet} problem for a system of second-order equations of composite type},
     journal = {Differencialʹnye uravneni\^a},
     pages = {91--96},
     publisher = {mathdoc},
     volume = {17},
     number = {1},
     year = {1981},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1981_17_1_a11/}
}