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2.
J. Dickson, and R.M. Ervin, "Buckling of Anisotropic Plates," Report ER 9293, Lockheed-Georgia Company (January, 1969).
3.
B. Budiansky, and P.C. Hu, "The Lagrangian Multiplier Method of Finding Upper and Lower Limits to Critical Stresses of Clamped Plates," NACA, Report No. 848 ( 1946).
4.
B. Budiansky, P.C. Hu, and R.W. Conner, "Notes on the Lagrangian Multiplier Method in Elastic Stability Analysis," NACA TN 1558 (1948).