@article{1183738231, author = {Lob, M. H.}, title = {A Reduction Theorem for Predicate Logic}, journal = {J. Symbolic Logic}, volume = {37}, number = {1}, year = {1972}, pages = { 352-354}, language = {en}, url = {http://dml.mathdoc.fr/item/1183738231} }
Lob, M. H. A Reduction Theorem for Predicate Logic. J. Symbolic Logic, Tome 37 (1972) no. 1, pp. 352-354. http://gdmltest.u-ga.fr/item/1183738231/