@article{AM2_1969__2_182315,
     author = {W. EICHHORN},
     title = {Functional {Equations} in {Vector} {Spaces,} {Composition} {Algebras} and {Systems} of {Partial} {Differential} {Equations} {(Short} {Communication)}},
     journal = {Aequationes mathematicae},
     pages = {130--132},
     publisher = {mathdoc},
     volume = {2},
     year = {1969},
     url = {http://geodesic.mathdoc.fr/item/AM2_1969__2_182315/}
}