@article{DE_2006_42_8_a9,
     author = {A. P. Soldatov},
     title = {On the index of the {Dirichlet} problem for elliptic systems on the plane},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1092--1105},
     publisher = {mathdoc},
     volume = {42},
     number = {8},
     year = {2006},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2006_42_8_a9/}
}