@article{1093956250, author = {McCall, Storrs}, title = {Contrariety.}, journal = {Notre Dame J. Formal Logic}, volume = {8}, number = {3}, year = {1967}, pages = { 121-132}, language = {en}, url = {http://dml.mathdoc.fr/item/1093956250} }
McCall, Storrs. Contrariety.. Notre Dame J. Formal Logic, Tome 8 (1967) no. 3, pp. 121-132. http://gdmltest.u-ga.fr/item/1093956250/