Pham Minh P. Using phase field and third-order shear deformation theory to study the effect of cracks on free vibration of rectangular plates with varying thickness. vn [Internet]. 5tháng 18800 [cited 5tháng 12026];71(7):853-67. Available from: https://tcsj.utc.edu.vn/index.php/tcgtvt/article/view/633