ประทุมขำ ป. (2023) “Investigation of Permeability Function of Pavement Materials in Unsaturated Condition and Its Application”, The 28th National Convention on Civil Engineering, 28, pp. GTE46–1. Available at: https://conference.thaince.org/index.php/ncce28/article/view/2411 (Accessed: 26 October 2024).