1) Jiang, M., and T. Morikawa (2003) Examination on the variation of value of travel time saving in intercity travel, Proceedings of 21st ARRB and 11th REAAA Conference, Cairns, Australia, 18-23 May. (CD-ROM)
2) Jiang, M., and T. Morikawa (2001) Empirical examination on value of travel time with stated preference data, Proceedings of the Third International Summer Symposium, pp. 273-276, Tokyo, 8 August.