@article{IVM_1990_11_a5,
     author = {A. I. Kudryavtsev and G. S. Survillo},
     title = {A~criterion for $L_p$-summability of {Fourier} series by {Ces\`aro} methods of negative order},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {47--50},
     publisher = {mathdoc},
     number = {11},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1990_11_a5/}
}