@article{DE_1997_33_12_a9,
     author = {V. E. Balabaev},
     title = {Generalized solutions of first-order, normal elliptic systems and their estimates},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1661--1669},
     publisher = {mathdoc},
     volume = {33},
     number = {12},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1997_33_12_a9/}
}