中国科学院数学与系统科学研究院期刊网
On the Commutativty of Operators on Pontrjagin Spaces
Hai Tao YANG, Gui Xian SU
Acta Mathematica Sinica, Chinese Series . 2006, (2): 451 -458 .  DOI: 10.12386/A2006sxxb0056