YUNITA, Rahma; MEGANANDA, Erzalina Ayu Satya; IDRIS , Idris; MAS’UD, Fuad. Markowitz and Single Index Models for Optimal Portfolio Formation: Evidence from SRI-KEHATI Index. Entrepreneurship and Innovation Review, Yogyakarta, ID, v. 3, n. 2, p. 279–296, 2025. DOI: 10.63208/210113-642. Disponível em: https://iacs.co.id/eir/article/view/642. Acesso em: 29 oct. 2026.