@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/