@article{10_4064_aa_38_4_389_410,
     author = {F. Beukers},
     title = {On the generalized {Ramanujan-Nagell} equation {I}},
     journal = {Acta Arithmetica},
     pages = {389--410},
     publisher = {mathdoc},
     volume = {38},
     number = {4},
     year = {1980},
     doi = {10.4064/aa-38-4-389-410},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-38-4-389-410/}
}