The quadratic-form identity for constructing Hamiltonian structures of the Guo hierarchy
董焕河, 张 宁
The quadratic-form identity for constructing Hamiltonian structures of the Guo hierarchy
Dong Huan-He(董焕河) and Zhang Ning(张宁)
中国物理B . 2006, (9): 1919 -1926 .  DOI: 10.1088/1009-1963/15/9/003