@article{10_4064_aa171_3_4,
     author = {H. G. Grundman and L. L. Hall-Seelig},
     title = {Solutions to $xyz = 1$ and $x + y + z = k$ in algebraic integers of small degree, {II}},
     journal = {Acta Arithmetica},
     pages = {257--276},
     publisher = {mathdoc},
     volume = {171},
     number = {3},
     year = {2015},
     doi = {10.4064/aa171-3-4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa171-3-4/}
}