@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/