Tragantalerngsak S, Hiriote S, Boonfueang T, Akawannung J. Analysis of clusters among the Retirement Mutual Funds before and during the COVID-19 crisis period. TJOR [internet]. 2021 Aug. 6 [cited 2026 Sep. 11];9(2):47-56. available from: https://ph02.tci-thaijo.org/index.php/TJOR/article/view/243968