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Ribakov, Yuri; Reinhorn, Andrei M. . (2003). Design of Amplified Structural Damping Using Optimal Considerations. Journal of Structural Engineering, 129(10), 1422–1427. doi:10.1061/(asce)0733-9445(2003)129:10(1422) 
10.1061/(asce)0733-9445(2003)129:10(1422)