@article{1183525783,
author = {Singletary, Wilson E.},
title = {A complex of problems proposed by Post},
journal = {Bull. Amer. Math. Soc.},
volume = {70},
number = {6},
year = {1964},
pages = { 105-109},
language = {en},
url = {http://dml.mathdoc.fr/item/1183525783}
}
Singletary, Wilson E. A complex of problems proposed by Post. Bull. Amer. Math. Soc., Tome 70 (1964) no. 6, pp. 105-109. http://gdmltest.u-ga.fr/item/1183525783/