@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/}
}