Kaxarboyevich , Abdukhamidov Sardor, Akhatov Khudaynazar Norim o’g’li, and Khudoykulov Shoxrux Shuxratovich. 2021. “Free Vibrations of an Elastic Two-Layer Plate”. International Journal of Innovative Analyses and Emerging Technology 1 (4):121-26. https://openaccessjournals.eu/index.php/ijiaet/article/view/248.