@article{1093894294, author = {Ackermann, Robert}, title = {Matrix satisfiability and axiomatization.}, journal = {Notre Dame J. Formal Logic}, volume = {12}, number = {1}, year = {1971}, pages = { 309-321}, language = {en}, url = {http://dml.mathdoc.fr/item/1093894294} }
Ackermann, Robert. Matrix satisfiability and axiomatization.. Notre Dame J. Formal Logic, Tome 12 (1971) no. 1, pp. 309-321. http://gdmltest.u-ga.fr/item/1093894294/