@article{1183738859,
author = {Blum, M. and Marques, I.},
title = {On Complexity Properties of Recursively Enumerable Sets},
journal = {J. Symbolic Logic},
volume = {38},
number = {1},
year = {1973},
pages = { 579-593},
language = {en},
url = {http://dml.mathdoc.fr/item/1183738859}
}
Blum, M.; Marques, I. On Complexity Properties of Recursively Enumerable Sets. J. Symbolic Logic, Tome 38 (1973) no. 1, pp. 579-593. http://gdmltest.u-ga.fr/item/1183738859/