@article{MZ_1949__51_169077,
     author = {R.. SPRAGUE},
     title = {\"Uber {Zerlegung} in ungleiche {Quadratzahlen}},
     journal = {Mathematische Zeitschrift},
     pages = {289--290},
     year = {1949},
     volume = {51},
     zbl = {0031.20301},
     url = {http://geodesic.mathdoc.fr/item/MZ_1949__51_169077/}
}