@article{GDZPPN002286432, title = {Undecidable Problems of Elementary Number Theory.}, journal = {Mathematische Annalen}, volume = {136}, year = {1958}, pages = {160-169}, zbl = {0081.24703}, url = {http://dml.mathdoc.fr/item/GDZPPN002286432} }
Kemeny, J.G. Undecidable Problems of Elementary Number Theory.. Mathematische Annalen, Tome 136 (1958) pp. 160-169. http://gdmltest.u-ga.fr/item/GDZPPN002286432/