@article{1183739776, author = {Friedman, Harvey}, title = {Uniformly Defined Descending Sequences of Degrees}, journal = {J. Symbolic Logic}, volume = {41}, number = {1}, year = {1976}, pages = { 363-367}, language = {en}, url = {http://dml.mathdoc.fr/item/1183739776} }
Friedman, Harvey. Uniformly Defined Descending Sequences of Degrees. J. Symbolic Logic, Tome 41 (1976) no. 1, pp. 363-367. http://gdmltest.u-ga.fr/item/1183739776/