@article{1190150030,
author = {Lempp, Steffen and Sorbi, Andrea},
title = {Embedding finite lattices into the {$\Sigma\sp 0\sb 2$} enumeration degrees},
journal = {J. Symbolic Logic},
volume = {67},
number = {1},
year = {2002},
pages = { 69-90},
language = {en},
url = {http://dml.mathdoc.fr/item/1190150030}
}
Lempp, Steffen; Sorbi, Andrea. Embedding finite lattices into the {$\Sigma\sp 0\sb 2$} enumeration degrees. J. Symbolic Logic, Tome 67 (2002) no. 1, pp. 69-90. http://gdmltest.u-ga.fr/item/1190150030/