@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/