Ismael, M., and B. Abdullah. “The Importance of Using Financial Engineering to Form a Hedging Portfolio from the Entrance to Call Options Approach: ‘ Application in a Sample of Iraqi Industrial Shareholding Companies ’”. Humanities Journal of University of Zakho, vol. 11, no. 1, Feb. 2023, pp. 172-87, doi:10.26436/hjuoz.2023.11.1.1037.