@article{SM_1996_187_4_a2,
     author = {B. V. Pal'tsev},
     title = {Mixed problems with non-homogeneous boundary conditions in {Lipschitz} domains for second-order elliptic equations with a~parameter},
     journal = {Sbornik. Mathematics},
     pages = {525--580},
     publisher = {mathdoc},
     volume = {187},
     number = {4},
     year = {1996},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1996_187_4_a2/}
}