@article{MT_1992_21_a1,
     author = {M. Yu. Vasil'chik},
     title = {On necessary and sufficient conditions for the trace of functions from the {Sobolev} space on the boundary of a plane domain with a {non-Lipschitz} boundary},
     journal = {Matemati\v{c}eskie trudy},
     pages = {5--29},
     publisher = {mathdoc},
     volume = {21},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MT_1992_21_a1/}
}