@article{GDZPPN002295903, title = {Characterizations of Ordinal Numbers in Set Theory.}, journal = {Mathematische Annalen}, volume = {163}, year = {1966}, pages = {1-25}, zbl = {0147.26101}, url = {http://dml.mathdoc.fr/item/GDZPPN002295903} }
Wang, H.; COOK, S.A. Characterizations of Ordinal Numbers in Set Theory.. Mathematische Annalen, Tome 163 (1966) pp. 1-25. http://gdmltest.u-ga.fr/item/GDZPPN002295903/