@article{1183740823,
author = {Daley, Robert P.},
title = {Busy Beaver Sets and the Degrees of Unsolvability},
journal = {J. Symbolic Logic},
volume = {46},
number = {1},
year = {1981},
pages = { 460-474},
language = {en},
url = {http://dml.mathdoc.fr/item/1183740823}
}
Daley, Robert P. Busy Beaver Sets and the Degrees of Unsolvability. J. Symbolic Logic, Tome 46 (1981) no. 1, pp. 460-474. http://gdmltest.u-ga.fr/item/1183740823/