@article{1093891099, author = {Tax, Robert E.}, title = {On the intuitionistic equivalential calculus.}, journal = {Notre Dame J. Formal Logic}, volume = {14}, number = {1}, year = {1973}, pages = { 448-456}, language = {en}, url = {http://dml.mathdoc.fr/item/1093891099} }
Tax, Robert E. On the intuitionistic equivalential calculus.. Notre Dame J. Formal Logic, Tome 14 (1973) no. 1, pp. 448-456. http://gdmltest.u-ga.fr/item/1093891099/