@article{JIS_2014__17_7_a2,
     author = {Harrington, Joshua and Jones, Lenny and Lamarche, Alicia},
     title = {Representing integers as the sum of two squares in the ring $\Bbb Z_n$},
     journal = {Journal of integer sequences},
     publisher = {mathdoc},
     volume = {17},
     number = {7},
     year = {2014},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JIS_2014__17_7_a2/}
}