Rizgar Abdlkarim Abdlaziz, Faisal Ali Khurshid and Hatem Hatef Abdulkadhim Altaee 2020. Relationship between unemployment rate and shadow economy of selected mena countries: a toda -yamamoto and panel causality approach. QALAAI ZANIST JOURNAL. 5, 4 (Dec. 2020), 895–916. DOI:https://doi.org/10.25212/lfu.qzj.5.4.32.