@article{1093882412,
author = {Varela, Francisco J.},
title = {The extended calculus of indications interpreted as a three-valued logic.},
journal = {Notre Dame J. Formal Logic},
volume = {20},
number = {1},
year = {1979},
pages = { 141-146},
language = {en},
url = {http://dml.mathdoc.fr/item/1093882412}
}
Varela, Francisco J. The extended calculus of indications interpreted as a three-valued logic.. Notre Dame J. Formal Logic, Tome 20 (1979) no. 1, pp. 141-146. http://gdmltest.u-ga.fr/item/1093882412/