2LIU Z. The comparative performance of public and private enterprises [ J ]. J Transportation Economies and Policy, 1995 (9) : 263-274.
3TONGZON J. Efficiency measurement of selected Australian and other international ports using data envelopment analysis [ J ]. Transportation Res Part A, 2001, 35: 113-128.
4CULLINANE K P B, SONG D W, GRAY R. A stochastic frontier model of the efficiency of major container terminals in Asia : accessing the influ- ence of administrative and ownership structures[ J]. Transportation Res Part A, 2002, 36 : 743-762.