@article{1183505800,
author = {Post, Emil L.},
title = {Recursively enumerable sets of positive integers and their decision problems},
journal = {Bull. Amer. Math. Soc.},
volume = {50},
number = {12},
year = {1944},
pages = { 284-316},
language = {en},
url = {http://dml.mathdoc.fr/item/1183505800}
}
Post, Emil L. Recursively enumerable sets of positive integers and their decision problems. Bull. Amer. Math. Soc., Tome 50 (1944) no. 12, pp. 284-316. http://gdmltest.u-ga.fr/item/1183505800/