Poom Kumam และ Khanitin Muangchoo-in; Parinya Sa-Ngiamsunthorn. (2022) A mathematical model of the critical Coronavirus Disease (Covid-19) situation in Thailand during March 2021 to August 2021. <i>Science & Technology Asia</i>, <i>27</i>(4), 215-227.Poom Kumam และ Khanitin Muangchoo-in; Parinya Sa-Ngiamsunthorn. "A mathematical model of the critical Coronavirus Disease (Covid-19) situation in Thailand during March 2021 to August 2021". Science & Technology Asia 27 (2022):215-227.Poom Kumam และ Khanitin Muangchoo-in; Parinya Sa-Ngiamsunthorn. A mathematical model of the critical Coronavirus Disease (Covid-19) situation in Thailand during March 2021 to August 2021. Research Administration Division:ม.ป.ท. 2022.