@article{10_1007_s10587_013_0052_y,
     author = {Keskin, Refik and \c{S}iar, Zafer and Karaatl{\i}, Olcay},
     title = {On the {Diophantine} equation $x^{2}-kxy+y^{2}-2^{n}=0$},
     journal = {Czechoslovak Mathematical Journal},
     pages = {783--797},
     publisher = {mathdoc},
     volume = {63},
     number = {3},
     year = {2013},
     doi = {10.1007/s10587-013-0052-y},
     mrnumber = {3125654},
     zbl = {06282110},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.1007/s10587-013-0052-y/}
}