@article{AM2_1979__19_136842,
     author = {P.G. Laird},
     title = {A reconsideration of the 'three squares' problem {(Short} {Communication).}},
     journal = {Aequationes mathematicae},
     pages = {315--316},
     publisher = {mathdoc},
     volume = {19},
     year = {1979},
     url = {http://geodesic.mathdoc.fr/item/AM2_1979__19_136842/}
}