@article{1093888119,
author = {Catlin, Seth},
title = {Pathologies in the ed-regressive sets of order $2$.},
journal = {Notre Dame J. Formal Logic},
volume = {18},
number = {1},
year = {1977},
pages = { 535-544},
language = {en},
url = {http://dml.mathdoc.fr/item/1093888119}
}
Catlin, Seth. Pathologies in the ed-regressive sets of order $2$.. Notre Dame J. Formal Logic, Tome 18 (1977) no. 1, pp. 535-544. http://gdmltest.u-ga.fr/item/1093888119/