[Li, Peijun] Acad Math & Syst Sci, Chinese Acad Sci, LSEC, ICMSEC, Beijing 100190, Peoples R China.
[Li, Peijun] Univ Chinese Acad Sci, Sch Math Sci, Beijing 100049, Peoples R China.
[Zhao, Yue; Yao, Xiaohua; Zhao, Y] Cent China Normal Univ, Sch Math & Stat, Wuhan 430079, Peoples R China.
[Zhao, Yue; Yao, Xiaohua; Zhao, Y] Cent China Normal Univ, Key Lab NAA MOE, Wuhan 430079, Peoples R China.