@article{UZKU_2015_157_2_a7,
     author = {M. M. Karchevsky and R. R. Shagidullin},
     title = {On boundary value problems for elliptic systems of second-order equations in divergence form},
     journal = {U\v{c}\"enye zapiski Kazanskogo universiteta. Seri\^a Fiziko-matemati\v{c}eskie nauki},
     pages = {93--103},
     publisher = {mathdoc},
     volume = {157},
     number = {2},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/UZKU_2015_157_2_a7/}
}