@article{JIS_2010__13_9_a3,
     author = {Franu\v{s}i\'c, Zrinka},
     title = {On the extension of the {Diophantine} pair $\{1,3\}$ in $\Bbb Z[\sqrt d]$},
     journal = {Journal of integer sequences},
     publisher = {mathdoc},
     volume = {13},
     number = {9},
     year = {2010},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JIS_2010__13_9_a3/}
}