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@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/} }
Sharma, P. L. On absolute logarithmic summability of double Fourier series.. Bollettino della Unione matematica italiana, Série 3, Tome 16 (1961) no. 1, pp. 19-23. http://geodesic.mathdoc.fr/item/BUMI_1961_3_16_1_a1/
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