إياد زيتي, and فادي خليل. “Testing For Trade Gravity Model Between Syria And Iraq Using Least Squares With Breakpoints Method During The Period (2002-2019)”. Latakia University Journal - Economic and Legal Sciences Series 44, no. 4 (September 21, 2022): 27–43. Accessed December 6, 2025. https://journal.latakia-univ.edu.sy/index.php/econlaw/article/view/13672.