WASET
    S. A. Alotaibi and  M. A. Al-Ajmi,  A Variable Stiffness Approach to Vibration Control .   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    February 2014, vol. 87(3). 565 - 567
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/9997737.