@article{DE_1980_16_1_a0,
     author = {A. M. Abdrakhmanov},
     title = {The {Dirichlet} problem for a degenerate not-strongly elliptic system of two second-order equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {3--12},
     publisher = {mathdoc},
     volume = {16},
     number = {1},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1980_16_1_a0/}
}