@article{1183734818,
author = {Pour-El, Marian Boykan},
title = {Review: Gerald E. Sacks, On the Degrees Less than 0'},
journal = {J. Symbolic Logic},
volume = {29},
number = {1},
year = {1964},
language = {en},
url = {http://dml.mathdoc.fr/item/1183734818}
}
Pour-El, Marian Boykan. Review: Gerald E. Sacks, On the Degrees Less than 0'. J. Symbolic Logic, Tome 29 (1964) no. 1, . http://gdmltest.u-ga.fr/item/1183734818/