List of Articles Level Shifts Open Access Article Abstract Page Full-Text 1 - Long-Term Memory and level shifts: Application of the modified GPH test in Tehran Stock Exchange mansoor kashi Mohammad Donyaei Roholah Ahmadi Open Access Article Abstract Page Full-Text 2 - A new adaptive exponential smoothing method for non-stationary time series with level shifts Mohammad Ali Saniee Monfared Razieh Ghandali Maryam Esmaeili