@article{1093891016, author = {Lehman, Anne}, title = {Two sets of perfect syllogisms.}, journal = {Notre Dame J. Formal Logic}, volume = {14}, number = {1}, year = {1973}, pages = { 425-429}, language = {en}, url = {http://dml.mathdoc.fr/item/1093891016} }
Lehman, Anne. Two sets of perfect syllogisms.. Notre Dame J. Formal Logic, Tome 14 (1973) no. 1, pp. 425-429. http://gdmltest.u-ga.fr/item/1093891016/