中国科学院数学与系统科学研究院期刊网
AMS
On Invertible Nonnegative Hamiltonian Operator Matrices
Guo Hai JIN, Guo Lin HOU, Alatancang CHEN, De Yu WU
Acta Mathematica Sinica . 2014, (10): 1763 -1774 .  DOI: 10.1007/s10114-014-3490-z