Cheenowang, K. and Jitsangiam, P. . (2020) “Development of Prototype for Monitoring the Railway Ballast Behavior”, Naresuan University Engineering Journal. Phitsanulok, Thailand, 15(2), pp. 136–147. Available at: https://ph01.tci-thaijo.org/index.php/nuej/article/view/242665 (Accessed: 29 February 2024).