@article{1183730667, author = {Levin, Nathan P.}, title = {Computational Logic}, journal = {J. Symbolic Logic}, volume = {14}, number = {1}, year = {1949}, pages = { 167-172}, language = {en}, url = {http://dml.mathdoc.fr/item/1183730667} }
Levin, Nathan P. Computational Logic. J. Symbolic Logic, Tome 14 (1949) no. 1, pp. 167-172. http://gdmltest.u-ga.fr/item/1183730667/