@article{10_4064_aa122_4_3,
     author = {Robert S. Coulter and Marie Henderson and Felix Lazebnik},
     title = {On certain combinatorial {Diophantine} equations
 and their connection to {Pythagorean} numbers},
     journal = {Acta Arithmetica},
     pages = {395--406},
     publisher = {mathdoc},
     volume = {122},
     number = {4},
     year = {2006},
     doi = {10.4064/aa122-4-3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa122-4-3/}
}