CHASANAH, Sri Istiyarti Uswatun; ABDULLAH, Syarif; VALENTIKA, Nina; KIFTIYANI, Usfita; NUHA, Agusyarif Rezka. ANALISIS PEMBENTUKAN PORTOFOLIO OPTIMAL SAHAM-SAHAM JAKARTA ISLAMIC INDEX (JII) PADA MASA PANDEMI COVID-19. Jurnal Saintika Unpam : Jurnal Sains dan Matematika Unpam, [S. l.], v. 3, n. 1, p. 52–67, 2020. DOI: 10.32493/jsmu.v3i1.5649. Disponível em: https://openjournal.unpam.ac.id/index.php/jsmu/article/view/5649. Acesso em: 3 feb. 2026.