Amrapala, C. and Choocharukul, K. (2019) “Comparative study of travel behavior between Thai and Japanese informal transport users: A case study of Silor services in the Sukhumvit area”, Engineering and Applied Science Research, 46(4), pp. 349–359. available at: https://ph01.tci-thaijo.org/index.php/easr/article/view/189282 (accessed: 23 September 2026).