WASET
    M.Eskandari-Ghadi and  M.Mahmoodian,  Analytical Solution of Time-Harmonic Torsional Vibration of a Cylindrical Cavity in a Half-Space.   journal   = {International Journal of Mechanical and Mechatronics Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2012, vol. 61(1). 184 - 189
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/5885.