@article{1183736197, author = {Pour-El, Marian Boykan}, title = {Effectively Extensible Theories}, journal = {J. Symbolic Logic}, volume = {33}, number = {1}, year = {1968}, pages = { 56-68}, language = {en}, url = {http://dml.mathdoc.fr/item/1183736197} }
Pour-El, Marian Boykan. Effectively Extensible Theories. J. Symbolic Logic, Tome 33 (1968) no. 1, pp. 56-68. http://gdmltest.u-ga.fr/item/1183736197/