@article{GDZPPN002406047, title = {The Ordered Set of N\"orlund Methods.}, journal = {Mathematische Zeitschrift}, volume = {114}, year = {1970}, pages = {1-8}, zbl = {0176.01501}, url = {http://dml.mathdoc.fr/item/GDZPPN002406047} }
Goffman, Casper; Huneke, Harold V. The Ordered Set of Nörlund Methods.. Mathematische Zeitschrift, Tome 114 (1970) pp. 1-8. http://gdmltest.u-ga.fr/item/GDZPPN002406047/