@article{10_1017_S001708950500251X,
     author = {LUCA, F. and WALSH, P. G.},
     title = {ON {A} {DIOPHANTINE} {EQUATION} {OF} {CASSELS}},
     journal = {Glasgow mathematical journal},
     pages = {303--307},
     year = {2005},
     volume = {47},
     number = {2},
     doi = {10.1017/S001708950500251X},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S001708950500251X/}
}