Kantasa-ard, Anirut, and Thitima Wonginta. “Developing a Hybrid Clustering Model for Covid-19 Vaccine Distribution in Bangkok Metropolis, Thailand”. Public Health Policy and Laws Journal 8, no. 1 (October 28, 2021): 19–43. Accessed May 6, 2024. https://so05.tci-thaijo.org/index.php/journal_law/article/view/254528.