@article{ZNSL_1977_73_a16,
     author = {V. G. Maz'ya},
     title = {Local square summability of convolutions},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {211--216},
     year = {1977},
     volume = {73},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1977_73_a16/}
}