@article{1093893522, author = {Cole, Richard}, title = {Definitional Boolean calculi.}, journal = {Notre Dame J. Formal Logic}, volume = {9}, number = {1}, year = {1968}, pages = { 343-350}, language = {en}, url = {http://dml.mathdoc.fr/item/1093893522} }
Cole, Richard. Definitional Boolean calculi.. Notre Dame J. Formal Logic, Tome 9 (1968) no. 1, pp. 343-350. http://gdmltest.u-ga.fr/item/1093893522/