@article{1178241540, author = {Sakata, Hiroshi}, title = {On convexity theorems for Riesz means}, journal = {Tohoku Math. J. (2)}, volume = {24}, number = {4}, year = {1972}, pages = { 301-307}, language = {en}, url = {http://dml.mathdoc.fr/item/1178241540} }
Sakata, Hiroshi. On convexity theorems for Riesz means. Tohoku Math. J. (2), Tome 24 (1972) no. 4, pp. 301-307. http://gdmltest.u-ga.fr/item/1178241540/