［1］Erd
[AKo¨D]s P, Ko C. On definite quadratic forms, which are not
the sum of two definite or semidefinite forms. Acta Arith, 1939, 3:102-122
［2］Krieg A. Modular Forms on Halfspaces of Quaternions. LNM 1143,
Berlin:SpringerVerlag, 1985
［3］Zhu Fuzu. On nondecomposability and indecomposability on
quadratic forms. Sci Sinica, 1988,
[31: 265-273
［4］Zhu Fuzu. On the construction of positive definite
indecomposable unimodular even Hermitian forms. J Number Theory, 1995,50: 318-320
［5］Zhu Fuzu. On the construction of nondecomposable definite
Hermitian forms. Northeast Math J, 1999, 15(3): 315-322