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]. 3tháng 78800 [cited 3tháng 72024];71(7):853-67. Available from: https://tcsj.utc.edu.vn/index.php/tcgtvt/article/view/633