@article{1093635837, author = {Purdy, William C.}, title = {A logic for natural language.}, journal = {Notre Dame J. Formal Logic}, volume = {32}, number = {2}, year = {1991}, pages = { 409-425}, language = {en}, url = {http://dml.mathdoc.fr/item/1093635837} }
Purdy, William C. A logic for natural language.. Notre Dame J. Formal Logic, Tome 32 (1991) no. 2, pp. 409-425. http://gdmltest.u-ga.fr/item/1093635837/