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@article{MAN_1968__179_161773, author = {A. ABIAN}, title = {On the {Cofinality} of {Ordinal} {Numbers.}}, journal = {Mathematische Annalen}, pages = {142--152}, publisher = {mathdoc}, volume = {179}, year = {1968}, zbl = {0179.01701}, url = {http://geodesic.mathdoc.fr/item/MAN_1968__179_161773/} }
A. ABIAN. On the Cofinality of Ordinal Numbers.. Mathematische Annalen, Tome 179 (1968), pp. 142-152. http://geodesic.mathdoc.fr/item/MAN_1968__179_161773/