WASET
    Xiaobai Li and  Li Li and  Yujin Hu and  Weiming Deng and  Zhe Ding,  A Refined Nonlocal Strain Gradient Theory for Assessing Scaling-Dependent Vibration Behavior of Microbeams.   journal   = {International Journal of Mechanical and Mechatronics Engineering}, [online]. World Academy of Science, Engineering and Technology.
    February 2017, vol. 123(3). 551 - 561
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/10006602.