فهرس المقالات pooled mean group method حرية الوصول المقاله صفحة الملخص نص كامل 1 - The Relationship between Risk and Return on Financial Assets (The Panel Vector Auto-Regression and Panel Cointegration Ap-proaches) Sorena Morovat Afshin Baghfalaki 10.22034/amfa.2020.1885620.1343