Dien, K. D., and N. D. Chinh. “Study on Optimal Parameter of Vibration Reduction System TMD-D and DVA for an Inverted Pendulum Type Structures and Application to Tower in the Ocean”. Vietnam Journal of Mechanics, vol. 32, no. 1, June 2010, pp. 59-69, doi:10.15625/0866-7136/32/1/317.