Abbasianjahromi, Hamidreza, Hossein Rajaie, Eghbal Shakeri, and Omid Kazemi. “A New Approach for Subcontractor Selection in the Construction Industry Based on Portfolio Theory”. Journal of Civil Engineering and Management 22, no. 3 (March 24, 2016): 346-356. Accessed December 29, 2024. https://jest.vgtu.lt/index.php/JCEM/article/view/1307.