@article{1183737623, author = {Isles, David}, title = {Natural Well-Orderings}, journal = {J. Symbolic Logic}, volume = {36}, number = {1}, year = {1971}, pages = { 288-300}, language = {en}, url = {http://dml.mathdoc.fr/item/1183737623} }
Isles, David. Natural Well-Orderings. J. Symbolic Logic, Tome 36 (1971) no. 1, pp. 288-300. http://gdmltest.u-ga.fr/item/1183737623/