1. Chen, Z., & Haynes, K. E. (2015). Impact of high-speed rail on international tourism demand in China. Applied Economics Letters, 22(1), 57e60.
2. Chen, F. F., Mantel, R., Ioannou, G., Roos, H., van den Berg, J., & Wilhelm, M. R. (1996). Infrastructure and networking in material handling research and development. In R. J. Graves, L. F. McGinnis, D. J. Medeiros, R. E. Ward, & M. R. Wilhelm (Eds.), Progress in material handling research (pp. 25–28). Ann Arbor, MI: Braun-Brumfield.
3. Chuersuwan, N., Nimrat, S., Lekphet, S., & Kerdkumrai, T. (2008). Levels and major sources of PM2.5 and PM10 in Bangkok Metropolitan Region. Environment International, 34, 671–677.
4. Dunn, S. C., Seaker, R. F., & Waller, M. A. (1994). Latent variables in business logistics research: Scale development and validation. Journal of Business Logistics, 15(2), 145–172.
5. Herrmann, J. W., Ioannou, G., Minis, I., & Proth, J. M. (1999). Minimization of acquisition and operational costs in horizontal material handling system design. IIE Transactions, 31(7), 679–693.