List of Articles Forecasting Volatility Open Access Article Abstract Page Full-Text 1 - Investigation of Volatility Forecast Errors using Geometric Brownian Motion and GARCH Models in Sector Indices of Tehran Securities Exchange Ershad Emami Alireza Heidarzadeh Hanzaei 10.30495/jfksa.2022.21084 Open Access Article Abstract Page Full-Text 2 - The Explanation of the Relationship between Downside Risk and Upside Risk combination in predicting Market Return Volatility hossein rad kaftroudi mohammadhasan gholizadeh mahdi fadaei