@article{1183742923,
author = {Royer, James S.},
title = {Two Recursion Theoretic Characterizations of Proof Speed-Ups},
journal = {J. Symbolic Logic},
volume = {54},
number = {1},
year = {1989},
pages = { 522-526},
language = {en},
url = {http://dml.mathdoc.fr/item/1183742923}
}
Royer, James S. Two Recursion Theoretic Characterizations of Proof Speed-Ups. J. Symbolic Logic, Tome 54 (1989) no. 1, pp. 522-526. http://gdmltest.u-ga.fr/item/1183742923/