@article{10_4064_fm_61_2_141_163,
     author = {Marian Pour-El and Saul Kripke},
     title = {Deduction-preserving {"Recursive} {Isomorphisms"} between theories},
     journal = {Fundamenta Mathematicae},
     pages = {141--163},
     publisher = {mathdoc},
     volume = {61},
     number = {2},
     year = {1967},
     doi = {10.4064/fm-61-2-141-163},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-61-2-141-163/}
}