@article{1093894227,
author = {Ellentuck, Erik},
title = {Incompleteness via simple sets.},
journal = {Notre Dame J. Formal Logic},
volume = {12},
number = {1},
year = {1971},
pages = { 255-256},
language = {en},
url = {http://dml.mathdoc.fr/item/1093894227}
}
Ellentuck, Erik. Incompleteness via simple sets.. Notre Dame J. Formal Logic, Tome 12 (1971) no. 1, pp. 255-256. http://gdmltest.u-ga.fr/item/1093894227/