@article{bwmeta1.element.bwnjournal-article-fmv36i1p20, author = {Andrzej Mostowski}, title = {An undecidable arithmetical statement}, journal = {Fundamenta Mathematicae}, volume = {36}, year = {1949}, pages = {143-164}, zbl = {0039.00802}, language = {en}, url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-fmv36i1p20} }
Mostowski, Andrzej. An undecidable arithmetical statement. Fundamenta Mathematicae, Tome 36 (1949) pp. 143-164. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-fmv36i1p20/