@article{MZM_2003_74_4_a2,
     author = {U. Goginava},
     title = {On {Ces\`aro} {Means} of {Double} {Trigonometric} {Fourier} {Series}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {502--507},
     publisher = {mathdoc},
     volume = {74},
     number = {4},
     year = {2003},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2003_74_4_a2/}
}