Investigation on Buckling of Orthotropic Circular and Annular Plates of Continuously Variable Thickness by Optimized Ritz MethodFatemeh Farhatnia and Arash GolshahInt. J. Simul. Multidisci. Des. Optim., 4 3-4 (2010) 127-133DOI: https://doi.org/10.1051/ijsmdo/2010016
