@article{1178243767, author = {Lorentz, George G. and Zeller, Karl}, title = {Strong and ordinary summability}, journal = {Tohoku Math. J. (2)}, volume = {15}, number = {4}, year = {1963}, pages = { 315-321}, language = {en}, url = {http://dml.mathdoc.fr/item/1178243767} }
Lorentz, George G.; Zeller, Karl. Strong and ordinary summability. Tohoku Math. J. (2), Tome 15 (1963) no. 4, pp. 315-321. http://gdmltest.u-ga.fr/item/1178243767/