@article{GDZPPN002077469, title = {Note on a Diophantine Equation.}, journal = {Elemente der Mathematik}, volume = {25}, year = {1970}, pages = {123-125}, zbl = {0207.35303}, url = {http://dml.mathdoc.fr/item/GDZPPN002077469} }
Williams, H.C. Note on a Diophantine Equation.. Elemente der Mathematik, Tome 25 (1970) pp. 123-125. http://gdmltest.u-ga.fr/item/GDZPPN002077469/