@article{ZNSL_1971_23_a3,
     author = {V. P. Il'in},
     title = {On some properties of functions of spaces $W^l _{p,a,x}(G)$},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {33--40},
     publisher = {mathdoc},
     volume = {23},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1971_23_a3/}
}