@article{10_4064_aa134_4_6,
     author = {Alain Togb\'e and Bo He},
     title = {Simultaneous {Pellian} equations with a single or no solution},
     journal = {Acta Arithmetica},
     pages = {369--380},
     publisher = {mathdoc},
     volume = {134},
     number = {4},
     year = {2008},
     doi = {10.4064/aa134-4-6},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa134-4-6/}
}