@article{1225114183,
author = {Ulas, Maciej},
title = {On the Diophantine Equation $(x^2+k)(y^2+k)=(z^2+k)^2$},
journal = {Rocky Mountain J. Math.},
volume = {38},
number = {2},
year = {2008},
pages = { 2091-2097},
language = {en},
url = {http://dml.mathdoc.fr/item/1225114183}
}
Ulas, Maciej. On the Diophantine Equation $(x^2+k)(y^2+k)=(z^2+k)^2$. Rocky Mountain J. Math., Tome 38 (2008) no. 2, pp. 2091-2097. http://gdmltest.u-ga.fr/item/1225114183/