@article{1183731603, author = {McNaughton, Robert}, title = {Some Formal Relative Consistency Proofs}, journal = {J. Symbolic Logic}, volume = {18}, number = {1}, year = {1953}, pages = { 136-144}, language = {en}, url = {http://dml.mathdoc.fr/item/1183731603} }
McNaughton, Robert. Some Formal Relative Consistency Proofs. J. Symbolic Logic, Tome 18 (1953) no. 1, pp. 136-144. http://gdmltest.u-ga.fr/item/1183731603/