@article{ASUO_2007_XV_1_a8,
     author = {M. Cipu},
     title = {Pairs of {Pell} equations having at most one common solution in positive
                            integers},
     journal = {Analele Universit\u{a}\c{t}ii "Ovidius" Constan\c{t}a Seria Matematic\u{a}},
     publisher = {mathdoc},
     volume = {XV},
     number = {1},
     year = {2007},
     url = {http://geodesic.mathdoc.fr/item/ASUO_2007_XV_1_a8/}
}