@article{1183737160,
author = {Thomason, S. K.},
title = {On Initial Segments of Hyperdegrees},
journal = {J. Symbolic Logic},
volume = {35},
number = {1},
year = {1970},
pages = { 189-197},
language = {en},
url = {http://dml.mathdoc.fr/item/1183737160}
}
Thomason, S. K. On Initial Segments of Hyperdegrees. J. Symbolic Logic, Tome 35 (1970) no. 1, pp. 189-197. http://gdmltest.u-ga.fr/item/1183737160/