@article{JIS_2010__13_9_a3,
     author = {Franu\v{s}i\'c,  Zrinka},
     title = {On the extension of the {Diophantine} pair \(\{1,3\}\) in \(\mathbb {Z[\sqrt} d]\)},
     journal = {Journal of integer sequences},
     year = {2010},
     volume = {13},
     number = {9},
     zbl = {1217.11030},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JIS_2010__13_9_a3/}
}