Ha, W. I. and Nam, G. C. (1996). “Modal choice models for freight transportation using
SP data.” Journal of Korean Society of Transportation, Korean Society of Transportation,
Vol. 14, No. 1, pp. 81-99.Ha, W. I. and Nam, G. C. (1996). “Modal choice models for
freight transportation using SP data.” Journal of Korean Society of Transportation,
Korean Society of Transportation, Vol. 14, No. 1, pp. 81-99.