@article{DAN_1989_307_6_a7,
     author = {N. Yu. Kapustin},
     title = {On the theory of boundary value problems with boundary functions},
     journal = {Doklady Akademii Nauk},
     pages = {1318--1322},
     publisher = {mathdoc},
     volume = {307},
     number = {6},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1989_307_6_a7/}
}