List of Articles Autoregressive fractionally in Open Access Article Abstract Page Full-Text 1 - Long memory in four main cryptocurrencies gholamreza zomorodian Babak Mahboubi 10.30495/jfksa.2022.20209 Open Access Article Abstract Page Full-Text 2 - A comparative study between the effectiveness of ARIMA and ARFIMA models in predicting the interest rate and the treasury exchange rate in Iran mohadeseh razaghi hashem nikomaram Alireza Heidarzadeh Hanzaei farhad ghaffari Mahdi Madanchi Zaj Open Access Article Abstract Page Full-Text 3 - Efficiency compared to ARIMA and ARFIMA models for modeling and prediction of Tehran Price Index (TEPIX) Habibollah salarzehi Mansoor kasha kasha Seyed-Hasan Hosseini Mohammad Donyaei Open Access Article Abstract Page Full-Text 4 - A Survey of Long-Term Memory in the Digital Currency Index Shima Alizadeh hossein safarzadeh