@article{1183744617,
author = {Gordeev, L.},
title = {A Modified Sentence Unprovable in $\mathbf{PA}$},
journal = {J. Symbolic Logic},
volume = {59},
number = {1},
year = {1994},
pages = { 1154-1157},
language = {en},
url = {http://dml.mathdoc.fr/item/1183744617}
}
Gordeev, L. A Modified Sentence Unprovable in $\mathbf{PA}$. J. Symbolic Logic, Tome 59 (1994) no. 1, pp. 1154-1157. http://gdmltest.u-ga.fr/item/1183744617/