Banakar, Mahsa, nikoomaram, Hashem, Ghalibaf Asl, Hasan, Minouie, Mehrzad. “The Analysis and Test of Spillover and Volatility of Global Markets for Petrochemical Products and Base Metals 
(Based on Copula family models).” Journal of Investment Knowledge, vol. 12, no. 46, 2023, pp. 505-532.