@article{DE_1992_28_1_a9,
     author = {N. A. Zhura},
     title = {Boundary value problems of {Bitsadze--Samarski{\v\i}} type for systems that are elliptic in the {Douglas--Nirenberg} sense},
     journal = {Differencialʹnye uravneni\^a},
     pages = {81--91},
     publisher = {mathdoc},
     volume = {28},
     number = {1},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1992_28_1_a9/}
}