S. Khemmarath, P. Sengsouriya, M. Phothirath, B. Sengvilaykham, S. Thykeo, and K. Suikhamlar, “Impact of COVID-19 on Lao Migration Case Study: Migrant Workers from Savannakhet Province Return from the Kingdom of Thailand”, sujournal, vol. 7, no. 2, pp. 309–319, Dec. 2021.