@article{1093891907, author = {Turek, Charles}, title = {Lehmann on the rules of the invalid syllogisms.}, journal = {Notre Dame J. Formal Logic}, volume = {16}, number = {1}, year = {1975}, pages = { 603-604}, language = {en}, url = {http://dml.mathdoc.fr/item/1093891907} }
Turek, Charles. Lehmann on the rules of the invalid syllogisms.. Notre Dame J. Formal Logic, Tome 16 (1975) no. 1, pp. 603-604. http://gdmltest.u-ga.fr/item/1093891907/