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@article{PORMA_1965__24_3_114961, author = {Hsiang, Fu Cheng}, title = {On {Riesz} summability of subsequences}, journal = {Portugaliae mathematica}, pages = {155--161}, publisher = {mathdoc}, volume = {24}, number = {3}, year = {1965}, mrnumber = {0219941}, zbl = {0144.31002}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PORMA_1965__24_3_114961/} }
Hsiang, Fu Cheng. On Riesz summability of subsequences. Portugaliae mathematica, Tome 24 (1965) no. 3, pp. 155-161. http://geodesic.mathdoc.fr/item/PORMA_1965__24_3_114961/