Tubtimkaew K, Sukcharoensin S. The Application of the Principal Component Analysis for Portfolio Investment Selection with Global ETF. Nida Bus J [internet]. 2025 Jan. 28 [cited 2025 Aug. 27];(35):59-80. available from: https://so10.tci-thaijo.org/index.php/NIDABJ/article/view/1290