@article{10_4064_aa111_1_6,
     author = {G. Kuba},
     title = {On the distribution of $k$th powers of integral quaternions},
     journal = {Acta Arithmetica},
     pages = {77--96},
     publisher = {mathdoc},
     volume = {111},
     number = {1},
     year = {2004},
     doi = {10.4064/aa111-1-6},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa111-1-6/}
}