@article{1200770213,
author = {Chaitin, Gregory J.},
title = {Program size, oracles, and the jump operation},
journal = {Osaka J. Math.},
volume = {14},
number = {1},
year = {1977},
pages = { 139-149},
language = {en},
url = {http://dml.mathdoc.fr/item/1200770213}
}
Chaitin, Gregory J. Program size, oracles, and the jump operation. Osaka J. Math., Tome 14 (1977) no. 1, pp. 139-149. http://gdmltest.u-ga.fr/item/1200770213/