[1] Univ Hong Kong, Dept Elect & Elect Engn, Hong Kong, Hong Kong, Peoples R China
[2] Hong Kong Baptist Univ, Dept Econ, Hong Kong, Hong Kong, Peoples R China
[3] Energy & Environm Econ Inc, San Francisco, CA 91104 USA
[4] Airport Author Hong Kong, Hong Kong, Hong Kong, Peoples R China