@article{BUMI_1961_3_16_1_a1,
     author = {Sharma, P. L.},
     title = {On absolute logarithmic summability of double {Fourier} series.},
     journal = {Bollettino della Unione matematica italiana},
     pages = {19--23},
     publisher = {mathdoc},
     volume = {Ser. 3, 16},
     number = {1},
     year = {1961},
     zbl = {0108.06402},
     mrnumber = {154047},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/BUMI_1961_3_16_1_a1/}
}