@article{1093635152, author = {van Benthem, Johan}, title = {Logical constants across varying types.}, journal = {Notre Dame J. Formal Logic}, volume = {30}, number = {2}, year = {1989}, pages = { 315-342}, language = {en}, url = {http://dml.mathdoc.fr/item/1093635152} }
van Benthem, Johan. Logical constants across varying types.. Notre Dame J. Formal Logic, Tome 30 (1989) no. 2, pp. 315-342. http://gdmltest.u-ga.fr/item/1093635152/