Gülçin Tekin and  Fethi Kadıoğlu,  Dynamic Analysis of Viscoelastic Plates with Variable Thickness.   journal   = {International Journal of Civil and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2016, vol. 110(2). 220 - 224
    [viewed 05 April 2020]. Available from: https://publications.waset.org/pdf/10003885.