[1]
|
E. Tun? and C. Tun?, “On the Instability of Solutions of Certain Sixth-Order Nonlinear Differential Equations,” Nonlinear Stud, Vol. 15, No. 3, 2008, pp. 207-213.
|
[2]
|
N. N. Krasovskii, “Stability of Motion. Applications of Lyapunov’s Second Method to Differential Systems and Equations with Delay,” Stanford University Press, Stanford, 1963.
|
[3]
|
J. O. C. Ezeilo, “An Instability Theorem for a Certain Sixth Order Differential Equation,” Journal of the Australian Mathematical Society, Vol. 32, No. 1, 1982, pp. 129-133. doi:10.1017/S1446788700024460
|
[4]
|
H. O. Tejumola, “Instability and Periodic Solutions of Certain Nonlinear Differential Equations of Orders Six and Seven,” Proceedings of the National Mathematical Centre, National Mathematical Center, Abuja, 2000.
|
[5]
|
A. Tiryaki, “An Instability Theorem for a Certain Sixth Order Differential Equation,” Indian Journal of Pure and Applied Mathematics, Vol. 21, No. 4, 1990, pp. 330-333.
|
[6]
|
C. Tun?, “An Instability Result for Certain System of Sixth Order Differential Equations,” Applied Mathematics and Computation, Vol. 157, No. 2, 2004, pp. 477-481.
doi:10.1016/j.amc.2003.08.046
|
[7]
|
C. Tun?, “On the Instability of Certain Sixth-Order Nonlinear Differential Equations,” Electronic Journal of Differential Equations, No. 117, 2004, p. 6.
|
[8]
|
C. Tun?, “On the Instability of Solutions to a Certain Class of Non-Autonomous and Non-Linear Ordinary Vector Differential Equations of Sixth Order,” Albanian Journal of Mathematics, Vol. 2, No. 1, 2008, pp. 7-13.
|
[9]
|
C. Tun?, “A Further Result on the Instability of Solutions to a Class of Non-Autonomous Ordinary Differential Equations of Sixth Order,” Applications & Applied Mathematics, Vol. 3, No. 1, 2008, pp. 69-76.
|
[10]
|
C. Tun?, “New Results about Instability of Nonlinear Ordinary Vector Differential Equations of Sixth and Seventh Orders,” Dynamics of Continuous, Discrete and Impulsive Systems, Series A: Mathematical Analysis, Vol. 14, No. 1, 2007, pp. 123-136.
|
[11]
|
C. Tun?, “Instability for a Certain Functional Differential Equation of Sixth Order,” Journal of the Indonesian Mathematical Society, Vol. 17, No. 2, 2011, pp. 123-128.
|
[12]
|
C. Tun?, “Instability Criteria for Solutions of a Delay Differential Equation of Sixth Order,” Journal of Advanced Research in Applied Mathematics, Vol. 4, No. 2, 2012, pp. 1-7.
|
[13]
|
C. Tun?, “An Instability Theorem for a Certain Sixth Order Nonlinear Delay Differential Equation,” Journal of the Egyptian Mathematical Society, 2012, in press.
|
[14]
|
R. Bellman, “Introduction to Matrix Analysis,” 2nd Edition, In: G. Golub, Eds., Classics in Applied Mathematics, Society for Industrial and Applied Mathematics (SIAM), Philadelphia, 1997.
|