@article{1183739724, author = {Catlin, Seth}, title = {ED-Regressive Sets of Order $n$}, journal = {J. Symbolic Logic}, volume = {41}, number = {1}, year = {1976}, pages = { 146-152}, language = {en}, url = {http://dml.mathdoc.fr/item/1183739724} }
Catlin, Seth. ED-Regressive Sets of Order $n$. J. Symbolic Logic, Tome 41 (1976) no. 1, pp. 146-152. http://gdmltest.u-ga.fr/item/1183739724/