@article{1102905354, author = {Hickman, J. L.}, title = {Reducing series of ordinals.}, journal = {Pacific J. Math.}, volume = {61}, number = {2}, year = {1975}, pages = { 461-473}, language = {en}, url = {http://dml.mathdoc.fr/item/1102905354} }
Hickman, J. L. Reducing series of ordinals.. Pacific J. Math., Tome 61 (1975) no. 2, pp. 461-473. http://gdmltest.u-ga.fr/item/1102905354/