@article{DAN_1991_319_2_a3,
     author = {M. Yu. Vasil'chik},
     title = {The traces of functions in a {Sobolev} space defined in a plane},
     journal = {Doklady Akademii Nauk},
     pages = {275--277},
     publisher = {mathdoc},
     volume = {319},
     number = {2},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1991_319_2_a3/}
}