By Wong S.C.   Wong W.T.   Leung C.M.   Tong C.O.   in Transportation Research Part B: Methodological

ISSN:0191-2615|36|4|291-312

Elsevier‎(2002)‎

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By Liao P H   Wong W T   Lo K V   in Journal of Environmental Engineering and Science

ISSN:1496-256X|4|1|77-81

NRC Research Press‎(2005)‎

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By WONG W. T.   WONG S. C.   TONG C. O.   in Transport Reviews

ISSN:1464-5327|23|1|1-20

Routledge Ltd‎(2003)‎

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By Wong W T   Chan W I   Liao P H   Lo K V   Mavinic D S   in Journal of Environmental Engineering and Science

ISSN:1496-256X|5|6|459-465

NRC Research Press‎(2006)‎

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