%0 Journal Article %A asgari, heshmatolah, omidi, mohammadreza, malekinia, zahra, OMIDI, ALIAKBAR %T Forecasting of OPEC's Global Crude Oil Demand using Vector Self-Engagement Models, Collective Exploration and Gravitational Search %J Future study Management %V 29 %N 115 %P 101-118 %D 2019 %R %U https://sanad.iau.ir/fa/Article/784986