@article{ZNSL_1971_22_a16,
     author = {Ju. I. Kopilevich},
     title = {On traces of elements of the space~$V_2$},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {183--189},
     publisher = {mathdoc},
     volume = {22},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1971_22_a16/}
}