@article{10_4064_aa126_2_2,
     author = {Xiaolei Dong and W. C. Shiu and C. I. Chu and Zhenfu Cao},
     title = {The simultaneous {Pell} equations $y^2-Dz^2=1$
 and $x^2-2Dz^2=1$},
     journal = {Acta Arithmetica},
     pages = {115--123},
     publisher = {mathdoc},
     volume = {126},
     number = {2},
     year = {2007},
     doi = {10.4064/aa126-2-2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa126-2-2/}
}