T. . Prasertsri, S. . Sartbumrung, S. . Suewongprayoon, N. . Sinsamutpadung, and J. . Rungamornrat, “FEM-PGD BASED TECHNIQUE FOR COLUMN SHAPE OPTIMIZATION AGAINST BUCKLING”, AEJ, vol. 11, no. 4, pp. 143-159, Oct. 2021.