WIRANATAKUSUMA, D. B.; NINDY, A. A. Measuring Optimal Portfolio for Selected Financing Contracts of Islamic Banks in Indonesia. The International Journal of Financial Systems, [S. l.], v. 1, n. 1, p. 1–34, 2023. DOI: 10.61459/ijfs.v1i1.5. Disponível em: https://www.ojkinstitute.id/index.php/ijfs/article/view/5. Acesso em: 14 oct. 2025.