@article{JRAM_1975__276_151609,
     author = {David Borwein and J.H. Rizvi},
     title = {Generalized strong summability of infinite series.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {142--147},
     publisher = {mathdoc},
     volume = {276},
     year = {1975},
     zbl = {0307.40007},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1975__276_151609/}
}