@article{03719676, title = {An ordered set of N\"orlund means.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {4}, year = {1981}, pages = {353-364}, doi = {10.1155/S0161171281000215}, zbl = {0459.40008}, language = {en}, url = {http://dml.mathdoc.fr/item/03719676} }
Defranza, J. An ordered set of Nörlund means.. International Journal of Mathematics and Mathematical Sciences, Tome 4 (1981) pp. 353-364. doi : 10.1155/S0161171281000215. http://gdmltest.u-ga.fr/item/03719676/