[1] M.N. Murad Kaki. On the cusp catastrophe model and stability. General Mathematics Notes, 2(2): 73–82, 2011.
[2] K. D. Arrow Smith and K. L. Taha. Vector Fields Mecanica. 18, 1983.
[3] L. Cesari. Asymptotic Behavior and Stability Problems in Ordinary Differential Equations. Academic Press, New York, 2nd revised edition, 1963, doi:10.1090/S0002-99391960-0121542-7.
[4] P. Hartman. A lemma in the theory of structural stability of differential equations. Proceedings of the American Mathematical Society, 14(1963): 568–578, 1963.
[5] K. L. Hale. Ordinary Differential Equations. John Wiley and Sons, New York, 2nd edition, 1960.
[6] W. Hirsch and S. Smile. Differential equations, dynamical systems and linear algebra. 1974.
[7] C. Hayashi. Nonlinear Oscillations in Physical Systems. McGraw Hill, New York, (1964), Reissue, Princeton Univ. Press (1984).
[8] E. J. Marsden and M. McCracken. The Hopf Bifurcation and its Applications, volume 19. Springer-Verlag, New York, Heidelberg Berlin, 1976.
[9] M.N. Mohammad. Treatment of Phenomena of Instability by Method of Catastrophe Theory. Master’s thesis, University of Baghdad, Baghdad, Iraq, 1985.
[10] M. N. Murad Kaki. Mathematical catastrophe with applications. General Mathematics Notes, 11(2): 35–46, 2012.
[11] W. D. Jordon and P. Smith. Nonlinear Ordinary Differential Equation. Oxford University Press, 2nd edition, 1989.
[12] E. C. Zeeman. Catastrophe theory: Selected papers. 1977.
[13] M. N. Murad Kaki. Non-linear dynamics and cusp catastrophe. Journal of College of Education, University of Al-Mustansiriya, (5): 101–110, 2013.
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