@article{DE_1989_25_5_a13,
     author = {N. A. Zhura},
     title = {Boundary value problems for elliptic systems in domains with a piecewise-smooth boundary},
     journal = {Differencialʹnye uravneni\^a},
     pages = {839--843},
     publisher = {mathdoc},
     volume = {25},
     number = {5},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1989_25_5_a13/}
}