@article{JIS_2016__19_8_a5,
     author = {Briggs,  Christopher and Hirano,  Yasuyuki and Tsutsui,  Hisaya},
     title = {Positive solutions to some systems of {Diophantine} equations},
     journal = {Journal of integer sequences},
     year = {2016},
     volume = {19},
     number = {8},
     zbl = {1353.11061},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JIS_2016__19_8_a5/}
}