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First Author:
Kwok Tong Soo
Lancaster University
Department of Economics, Lancaster University Management School
Lancaster, LA1 4YX, United Kingdom
+44(0)1524 594418(Phone)
+44(0)1524 594418(Fax)

Second Author:

Ching-Fu Chen
National Cheng Kung University
Department of Transportation and Communication, National Cheng Kung University, 1, University Rd.
Tainan, 701, Taiwan
+886-6-2757575 ext. 53230(Phone)