@article{MZM_1996_60_1_a16,
     author = {N. N. Pustovoitov},
     title = {A characterization of the space $H_1^\Omega$},
     journal = {Matemati\v{c}eskie zametki},
     pages = {144--148},
     year = {1996},
     volume = {60},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1996_60_1_a16/}
}