1. Phat Vu N., Niamsup P., "Stability of linear time-varying delay systems and applications to control problems", J. Comput. Math. Appl. 194 (2006) 343-356.
2. Su J. H., "Further results on the robust stability of linear systems with a single time delay", Syst. Control Lett 23 (1994) 375-379.
3. Boyd S., Ghaoui EL., Feron E., Balakrishon V., "Linear matrix inequality and control theory", SIAM Studies in Applied Mathematics vol 15, SIAM, Philadelphia, PA (1994).
4. Kharitonov V. L., "Lyapunov-Krasovskii functional for scalar time delay equations", Syst. Control, Lett. 51(2004) 133-149.
5. Xu S., Lam J., "Improved delay-dependent stability criteria for time-delay systems", IEEE Trans. Automat. Control 50 (2005) 384-387
6. Xu B., "Stability criteria for linear systems with uncertain delays", J. Math. Anal. Appl. 284 (2003) 455-470.
7. Liu P. L., Su T. J., "Roboust stability of interval time-delay systems with delay-dependence", Syst. Control Lett. 33 (1998) 231-239.
8. Ren F., Cao J., "Novel -stability criterion of linear systems with multiple time delays", J. Comput. Math. Apple, 181 (2006) 282-290.
9. Yue D., Won S., "Delay-dependent robust stability of stochastic systems with time delay and nonlinear uncertaities", Electron. Lett. 37 (2001) 992-993.
10. Tan M.C., "Asymptotic stability of nonlinear systems with unbounded delays", J. Comput. Math. Apple. 337 (2008) 1010-1021.
11. wang S., Jia Z., "Inequality in matrix theory, Anhui Education Press", Hefei, 1994 (in Chines).
12. Landry M., Campbell S.A., Morris K., Aguilar C., "Dynamics of an inverted pendulum with delay feedback control", SIAM .J.Applied Dynamical Systems, 4 (2005) 333-351.
13. Attia E., Bondor M., Forys U., "Angiogenesis models with discrete delays, Math. Biosci. Eng., 14(1) (2017) 1-15.
14. Bugong X., "Stability criteria for linear systems with multiple time-varying delays", J. Control Theory Apple.,1 (2003) 65-69.