@article{ author = {KHADEMPOUR ARANI, ABBAS, Madani Zaj, Mehdi, Keyqobadi, AmirReza, Zomorodian, QolamReza}, title = {The effect of liquidity and diversification on choosing the optimal investment portfolio}, journal = {Journal of Development & Evolution Mnagement}, year = {2023}, volume = {15}, number = {52}, pages = {139-154}, doi = {} }