@article{GDZPPN002374633, title = {On Strong Summability for any positive order.}, journal = {Mathematische Zeitschrift}, volume = {37}, year = {1933}, pages = {481-492}, zbl = {0007.34603}, url = {http://dml.mathdoc.fr/item/GDZPPN002374633} }
Winn, C.E. On Strong Summability for any positive order.. Mathematische Zeitschrift, Tome 37 (1933) pp. 481-492. http://gdmltest.u-ga.fr/item/GDZPPN002374633/