@article{10_4064_aa_11_3_353_358,
     author = {Andrzej Schinzel and H. Davenport and D. Lewis},
     title = {Quadratic {Diophantine} equations with a parameter},
     journal = {Acta Arithmetica},
     pages = {353--358},
     publisher = {mathdoc},
     volume = {11},
     number = {3},
     year = {1965},
     doi = {10.4064/aa-11-3-353-358},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-11-3-353-358/}
}