@article{10_4064_aa122_4_4,
     author = {Michael A. Bennett and Mihai Cipu and Maurice Mignotte and Ryotaro Okazaki},
     title = {On the number of solutions of simultaneous {Pell} equations {II}},
     journal = {Acta Arithmetica},
     pages = {407--417},
     publisher = {mathdoc},
     volume = {122},
     number = {4},
     year = {2006},
     doi = {10.4064/aa122-4-4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa122-4-4/}
}