@article{MT_1987_7_a2,
     author = {M. Z. Berkolaiko},
     title = {Traces of functions in generalized {Sobolev} spaces with a mixed norm on an arbitrary coordinate {subspace.~I}},
     journal = {Matemati\v{c}eskie trudy},
     pages = {30--44},
     year = {1987},
     volume = {7},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MT_1987_7_a2/}
}