PRATAMA, A.; SATYAHADEWI, N.; SULISTIANINGSIH, E. ANALYSIS OF OPTIMAL PORTFOLIO FORMATION ON IDX30 INDEXED STOCK WITH THE MEAN ABSOLUTE DEVIATION METHOD. BAREKENG: Jurnal Ilmu Matematika dan Terapan, v. 18, n. 3, p. 1753-1764, 31 jul. 2024.