@article{AM2_1973__9_136369,
     author = {LAWRENCE ETIGSON},
     title = {Equivalence of {'Cube'} and {'Octahedron'} {Functional} {Equations} {(Short} {Communication)}},
     journal = {Aequationes mathematicae},
     pages = {306--307},
     publisher = {mathdoc},
     volume = {9},
     year = {1973},
     url = {http://geodesic.mathdoc.fr/item/AM2_1973__9_136369/}
}