بخيت عبد الجبار خضر, and هاشم زهراء قاسم. “Building a Mathematical Model of the Transportation Problem under the Dynamics of Demand Restrictions With Practical Application”. Journal of Economics and Administrative Sciences 22, no. 91 (August 1, 2016): 353. Accessed February 18, 2025. https://jeasiq.uobaghdad.edu.iq/index.php/JEASIQ/article/view/489.