فهرس المقالات Hassan Valian المقاله 1 - To Study The Effect of Investor Protection on Future Stock Price Crash Risk 10.22034/amfa.2020.1877598.1287 Hassan Valian Fatemeh Jalali Mehdi Darvishan Mohamad Mehdi Mohamadi Advances in Mathematical Finance and Applications , العدد 2 , السنة 6 , بهار 2021