@article{SM_2008_199_11_a3,
     author = {D. V. Lymanskyi and M. M. Malamud},
     title = {Elliptic and weakly coercive systems of operators in {Sobolev} spaces},
     journal = {Sbornik. Mathematics},
     pages = {1649--1686},
     publisher = {mathdoc},
     volume = {199},
     number = {11},
     year = {2008},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2008_199_11_a3/}
}