Saber Perdawd Othman, and Aveen Abdulqahar Abdulmajed. “Estimation of Almost Ideal Demand System on Food Expenditure in Erbil InYear 2012”. QALAAI ZANIST JOURNAL 6, no. 3 (September 30, 2021): 886–913. Accessed December 22, 2024. https://journal.lfu.edu.krd/ojs/index.php/qzj/article/view/715.