ZOUAOUI, L. and Naas, M.N. 2020. International Diversification Portfolio Optimization Using Ants Colony Algorithms Case of Dow Jones Islamic Market Indexes (DJIMI). Dirassat Journal Economic Issue. 11, 1 (Jan. 2020), 1-27. DOI:https://doi.org/10.34118/djei.v11i1.80.