@article{1204900343,
author = {Peirce, C. S.},
title = {Logical machines},
journal = {Mod. Log.},
volume = {7},
number = {1},
year = {1997},
pages = { 71-77},
language = {en},
url = {http://dml.mathdoc.fr/item/1204900343}
}
Peirce, C. S. Logical machines. Mod. Log., Tome 7 (1997) no. 1, pp. 71-77. http://gdmltest.u-ga.fr/item/1204900343/