@article{1183740064,
author = {Soare, Robert I.},
title = {Computational Complexity, Speedable and Levelable Sets},
journal = {J. Symbolic Logic},
volume = {42},
number = {1},
year = {1977},
pages = { 545-563},
language = {en},
url = {http://dml.mathdoc.fr/item/1183740064}
}
Soare, Robert I. Computational Complexity, Speedable and Levelable Sets. J. Symbolic Logic, Tome 42 (1977) no. 1, pp. 545-563. http://gdmltest.u-ga.fr/item/1183740064/