@article{IM2_1967_1_5_a12,
     author = {L. D. Kudryavtsev},
     title = {The solution of the first boundary-value problem for self-adjoint elliptic equations in the case of an unbounded region},
     journal = {Izvestiya. Mathematics },
     pages = {1131--1151},
     publisher = {mathdoc},
     volume = {1},
     number = {5},
     year = {1967},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1967_1_5_a12/}
}