Frequency characteristics of a GPL-reinforced composite microdisk coupled with a piezoelectric layerErfan Shamsaddini lori, Farzad Ebrahimi, Eris Elianddy Bin Supeni, Mostafa Habibi and Hamed SafarpourEur. Phys. J. Plus, 135 2 (2020) 144DOI: https://doi.org/10.1140/epjp/s13360-020-00217-x