@article{JRAM_1974__267_151442,
     author = {D. Borwein and F.P. Cass},
     title = {Strict inclusion between strong and ordinary methods of summability.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {166--174},
     publisher = {mathdoc},
     volume = {267},
     year = {1974},
     zbl = {0296.40005},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1974__267_151442/}
}