@article{1093956088, author = {Dreben, Burton and Putnam, Hilary}, title = {The Craig interpolation lemma.}, journal = {Notre Dame J. Formal Logic}, volume = {8}, number = {3}, year = {1967}, pages = { 229-233}, language = {en}, url = {http://dml.mathdoc.fr/item/1093956088} }
Dreben, Burton; Putnam, Hilary. The Craig interpolation lemma.. Notre Dame J. Formal Logic, Tome 8 (1967) no. 3, pp. 229-233. http://gdmltest.u-ga.fr/item/1093956088/