Toloue, I., Liew, M.S., Harahap, I.S.H. and Lee, H.E. 2018. A Novel Algorithm for Effective Vibration Control of Portal Frames. Journal of Engineering and Technological Sciences. 50, 3 (Aug. 2018), 315-329. DOI:https://doi.org/10.5614/j.eng.technol.sci.2018.50.3.1.