TY - JOUR AU - Zahraei, seyyed Mehdi AU - Mohammadi, Omid TI - Seismic Behavior Upgrade of Steel Moment FramesUsing Viscous Dampers and Determination of Their Proper Damping Forces JO - Analysis of Structure and Earthquake VL - 13 IS - 1 SP - 1 EP - 13 PY - 2016 DO - ER -