Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{AMLG_1960__5_137752, author = {G. Kreisel and J. Shoenfield}, title = {Number theoretic concepts and recursive well-orderings.}, journal = {Archiv f\"ur mathematische Logik und Grundlagenforschung}, pages = {42--64}, publisher = {mathdoc}, volume = {5}, year = {1960}, zbl = {0129.00402}, url = {http://geodesic.mathdoc.fr/item/AMLG_1960__5_137752/} }
G. Kreisel; J. Shoenfield. Number theoretic concepts and recursive well-orderings.. Archiv für mathematische Logik und Grundlagenforschung, Tome 5 (1960), pp. 42-64. http://geodesic.mathdoc.fr/item/AMLG_1960__5_137752/