Saad N, نجلاء, huseen hashim, هاشم. Identification of Transformation Function Models for OPEC Crude Oil Prices. IQJOSS [Internet]. 2025 Jun. 25 [cited 2025 Aug. 6];19(1):67-75. Available from: https://rjps.uomosul.edu.iq/index.php/stats/article/view/21001