@article{DE_1993_29_5_a11,
     author = {V. E. Balabaev},
     title = {First-order complex elliptic systems},
     journal = {Differencialʹnye uravneni\^a},
     pages = {818--832},
     year = {1993},
     volume = {29},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1993_29_5_a11/}
}