WASET
    Emiliano Matta,  Bidirectional Pendulum Vibration Absorbers with Homogeneous Variable Tangential Friction: Modelling and Design.   journal   = {International Journal of Structural and Construction Engineering}, [online]. World Academy of Science, Engineering and Technology.
    October 2018, vol. 143(11). 1074 - 1082
    [viewed 19 September 2024]. Available from: https://publications.waset.org/pdf/10009748.