Enshassi, Adnan, Faisal Arain, and Sadi Al-Raee. “Causes of Variation Orders in Construction Projects in the Gaza Strip”. Journal of Civil Engineering and Management 16, no. 4 (December 31, 2010): 540-551. Accessed November 25, 2024. https://jcem.vgtu.lt/index.php/JCEM/article/view/6005.