List of Articles VGA Open Access Article Abstract Page Full-Text 1 - A Bulk-Driven Variable Gain OTA in 180nm CMOS Technology Mohammad Anvari Farshad Babazadeh Open Access Article Abstract Page Full-Text 2 - Money Growth Uncertainty and Currency Substitution in IRAN: A Multivariate GARCH Approach Sima Eskandari Sabzi Asad Allah Farzinvash Kambiz Hojabr Kiani Hamid Shahrestani