Koohkan, H., A. Kimiaeifar, A. Mansourabadi, and R. Vaghefi. “AN ANALYTICAL APPROACH ON THE BUCKLING ANALYSIS OF CIRCULAR, SOLID AND ANNULAR FUNCTIONALLY GRADED THIN PLATESGRADED THIN”. Journal of Mechanical Engineering 41, no. 1 (1): 7-14. Accessed January 21, 2021. https://www.banglajol.info/index.php/JME/article/view/5357.