@article{00850760,
title = {A problem of Diophantos-Fermat and Chebyshev polynomials of the second kind.},
journal = {Portugaliae Mathematica. Nova S\'erie},
volume = {52},
year = {1995},
pages = {301-304},
zbl = {0844.11013},
language = {en},
url = {http://dml.mathdoc.fr/item/00850760}
}
Udrea, Gheorghe. A problem of Diophantos-Fermat and Chebyshev polynomials of the second kind.. Portugaliae Mathematica. Nova Série, Tome 52 (1995) pp. 301-304. http://gdmltest.u-ga.fr/item/00850760/