@article{DAN_1977_232_6_a6,
     author = {O. A. Oleinik and G. A. Iosif'yan},
     title = {Energy estimates of the generalized solutions of boundary value problems for second order elliptic equations, and their applications},
     journal = {Doklady Akademii Nauk},
     pages = {1257--1260},
     publisher = {mathdoc},
     volume = {232},
     number = {6},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1977_232_6_a6/}
}