1. Love, A. E. H.: A Treatise on the Mathematical Theory of Elasticity. New York: pp. 401?405 1944
2. Biezeno, C. B.; Grammel, R.: Engineering Dynamics. London: and Blackie Sons, Ltd. 1956
3. Timoshenko, S. P.; Gere, J. M.: Theory of Elastic Stability. New York, London: McGraw-Hill 1961
4. Panayotounakos, D. E.; Theocaris, P. S.: Nonlinear Analysis of Cantilever Rods Due to Terminal Moments. Ing.-Arch. 49 (1980) 73?79
5. Panayotounakos, D. E.; Theocaris, P. S.: Non-linear Elastic Analysis of Circular Beams Loaded by Coplanar Concentrated Forces. Z. Angew. Math. Mech. 60 (1980) 531?536