Luangwilai, T., Buapiban, T., Welamas, W., Meechowna, S., Suksangun, C. and Leelayuth, S. (2020) “Estimating the Covid-19 epidemic in Thailand by using SIR/D model”, NKRAFA JOURNAL OF SCIENCE AND TECHNOLOGY, 16(2), pp. 67–73. available at: https://ph02.tci-thaijo.org/index.php/nkrafa-sct/article/view/241190 (accessed: 14 September 2026).