Chantarasmai, K., & Sindhuchao, S. (2017). Improvement of vehicle routes with the iterated local search method case study: Tongnamkeang shop, Warinchumrab district, Ubon Ratchathani province. Asia-Pacific Journal of Science and Technology, 17(6), 850–861. Retrieved from https://so01.tci-thaijo.org/index.php/APST/article/view/83298