@article{1183736629,
author = {Lerman, Manuel},
title = {Some Nondistributive Lattices as Initial Segments of the Degrees of Unsolvability},
journal = {J. Symbolic Logic},
volume = {34},
number = {1},
year = {1969},
pages = { 85-98},
language = {en},
url = {http://dml.mathdoc.fr/item/1183736629}
}
Lerman, Manuel. Some Nondistributive Lattices as Initial Segments of the Degrees of Unsolvability. J. Symbolic Logic, Tome 34 (1969) no. 1, pp. 85-98. http://gdmltest.u-ga.fr/item/1183736629/