@article{1183738632, author = {Ehrenfeucht, Andrzej}, title = {Discernible Elements in Models for Peano Arithmetic}, journal = {J. Symbolic Logic}, volume = {38}, number = {1}, year = {1973}, pages = { 291-292}, language = {en}, url = {http://dml.mathdoc.fr/item/1183738632} }
Ehrenfeucht, Andrzej. Discernible Elements in Models for Peano Arithmetic. J. Symbolic Logic, Tome 38 (1973) no. 1, pp. 291-292. http://gdmltest.u-ga.fr/item/1183738632/