中国科学院数学与系统科学研究院期刊网
Self-adjointness of the Product of Two Hamiltonian Operators under the Limit Circle Case
Zhao Wen ZHENG, Bao Sheng LIU
Acta Mathematica Sinica, Chinese Series . 2012, (2): 301 -310 .  DOI: 10.12386/A2012sxxb0030