@article{10_4064_aa_23_2_137_151,
     author = {F. Ellison},
     title = {Three diagonal quadratic forms},
     journal = {Acta Arithmetica},
     pages = {137--151},
     publisher = {mathdoc},
     volume = {23},
     number = {2},
     year = {1973},
     doi = {10.4064/aa-23-2-137-151},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-23-2-137-151/}
}