1. CoddingtonE.; LevinsonN. (1955): Theory of ordinary differential equations. Mc Graw-Hill, New York
2. ElsgoltsL. (1973): Differential equations and the calculus of variations. MIR, Moscow
3. HoffJ. N. (1951): The dynamics of the buckling of elastic columns. J. Appl. Mech. 18, Trans. ASME 73, 68–74
4. Kandakis, G.; Kounadis, A. N. (1993): On the large post-buckling response of nonconservative continuous systems. Ingenieur—Archiv (to be published)
5. Kounadis, A. N. (1986): A comparative stability study of frames by the exact elastica and other approximate analyses. Proc. of 1st National congress on Mechanics, Athens, 25–27 June