@article{1183528862,
author = {Singletary, W. E.},
title = {The equivalence of some general combinatorial decision problems},
journal = {Bull. Amer. Math. Soc.},
volume = {73},
number = {6},
year = {1967},
pages = { 446-451},
language = {en},
url = {http://dml.mathdoc.fr/item/1183528862}
}
Singletary, W. E. The equivalence of some general combinatorial decision problems. Bull. Amer. Math. Soc., Tome 73 (1967) no. 6, pp. 446-451. http://gdmltest.u-ga.fr/item/1183528862/