@article{DAN_1969_185_6_a9,
     author = {M. D. Ramazanov},
     title = {Theorems on traces and extensions of functions from surfaces},
     journal = {Doklady Akademii Nauk},
     pages = {1239--1242},
     publisher = {mathdoc},
     volume = {185},
     number = {6},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1969_185_6_a9/}
}