@article{1183737323, author = {Baer, R. M.}, title = {Review: Paul Axt, Relativization of a Primitive Recursive Hierarchy}, journal = {J. Symbolic Logic}, volume = {35}, number = {1}, year = {1970}, language = {en}, url = {http://dml.mathdoc.fr/item/1183737323} }
Baer, R. M. Review: Paul Axt, Relativization of a Primitive Recursive Hierarchy. J. Symbolic Logic, Tome 35 (1970) no. 1, . http://gdmltest.u-ga.fr/item/1183737323/