@article{1183745140,
author = {Calhoun, William C. and Slaman, Theodore A.},
title = {The $\Pi^0\_2$ Enumeration Degrees are Not Dense},
journal = {J. Symbolic Logic},
volume = {61},
number = {1},
year = {1996},
pages = { 1364-1379},
language = {en},
url = {http://dml.mathdoc.fr/item/1183745140}
}
Calhoun, William C.; Slaman, Theodore A. The $\Pi^0_2$ Enumeration Degrees are Not Dense. J. Symbolic Logic, Tome 61 (1996) no. 1, pp. 1364-1379. http://gdmltest.u-ga.fr/item/1183745140/