@article{IVM_1971_12_a11,
     author = {A. G. Lebed'},
     title = {Linear summability methods, and absolute convergence of double {Fourier} series},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {91--102},
     publisher = {mathdoc},
     number = {12},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1971_12_a11/}
}