Wipulanusat W, Herabat P. Road user Benefits Transfer: the Case of Contingent Valuation Method and Vehicle Operating Cost. Sci Tech Asia [Internet]. 2015 Oct. 31 [cited 2024 Apr. 26];12(2):78-87. Available from: https://ph02.tci-thaijo.org/index.php/SciTechAsia/article/view/41519