@article{ author = {Karimi, Arezou, Zakipour, Fatemeh}, title = {Two-objective optimization of petrochemical portfolio with Strength Pareto Evolutionary Algorithm (SPEA2) by different approaches in portfolio selection}, journal = {Journal of Investment Knowledge}, year = {2024}, volume = {13}, number = {52}, pages = {347-372}, doi = {10.30495/jik.2024.23151} }