@article{TM_1967_91_a2,
     author = {I. A. Kipriyanov},
     title = {A~variational problem in a~half space},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {19--26},
     publisher = {mathdoc},
     volume = {91},
     year = {1967},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_1967_91_a2/}
}