SAECHIN, A.; TRAGANTALERNGSAK, S. Portfolio selection based on Data Envelopment Analysis. Thai Journal of Operations Research : TJOR, [S. l.], v. 7, n. 1, p. 15–24, 2019. Disponível em: https://ph02.tci-thaijo.org/index.php/TJOR/article/view/172652. Acesso em: 1 oct. 2026.