@article{10_4064_ba62_3_3,
     author = {J\"org Br\"udern},
     title = {Sums of {Squares} {Coprime} in {Pairs}},
     journal = {Bulletin of the Polish Academy of Sciences. Mathematics},
     pages = {215--231},
     publisher = {mathdoc},
     volume = {62},
     number = {3},
     year = {2014},
     doi = {10.4064/ba62-3-3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ba62-3-3/}
}