1. Allen, D. H. and Haisler, W. E. (1985) Introduction to Aerospace Structural Systems, John Wiley & Sons, New York, Chichester, Briscone.
2. Argyris, J. H. and Dunne, P. C. (1947) “The General Theory of Cylindrical and Conical Tubes Under Torsion and Bending Loads,” Journal of Royal Aeronautical Society,Vol. 51, 199–269, 757–784, 884–930; Vol. 53 (1949) 461–483, 558–620.
3. Ascione, L. and Grimaldi, A. (1983) “On the Stability and Postbuckling Behavior of Elastic Beams,” Thin-Walled Structures, (1), pp. 325–351.
4. Attard, M. M. (1986) “Non-Linear Theory of Non-Uniform Torsion of Thin-Walled Open Beams,” Thin-Walled Structures, (4), pp. 101–134.
5. Badir, A. M., Berdichevsky, V. L. and Armanios, E. A. (1993) “Theory of Composite Thin-Walled Opened Cross Section Beams,” 34th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference, AIAA/ASME Adaptive Structures Forum, La Jolla, CA, 19–22, April, pp. 2761–2770.