ADITYA RIAN RAMADHAN; PERLI ISWANTO; DIDIN HIKMAH PERKASA. ANALISIS PORTOFOLIO OPTIMAL SAHAM INDEKS INFOBANK 15 DENGAN MODEL MARKOWITZ UNTUK PENGAMBILAN KEPUTUSAN INVESTASI PASCA PANDEMI COVID-19. Jurnal Akuntansi dan Manajemen Bisnis, [S. l.], v. 3, n. 3, p. 53–60, 2023. DOI: 10.56127/jaman.v3i3.1093. Disponível em: https://journal.admi.or.id/index.php/JAMAN/article/view/1093. Acesso em: 12 mar. 2025.