@article{1183733918, author = {Levy, Azriel}, title = {A Generalization of Godel's Notion of Constructibility}, journal = {J. Symbolic Logic}, volume = {25}, number = {1}, year = {1960}, pages = { 147-155}, language = {en}, url = {http://dml.mathdoc.fr/item/1183733918} }
Levy, Azriel. A Generalization of Godel's Notion of Constructibility. J. Symbolic Logic, Tome 25 (1960) no. 1, pp. 147-155. http://gdmltest.u-ga.fr/item/1183733918/