[1] Agarwal R.P., Grace S.R., O'Regan D.: 
Oscillation Theory for Second Order Dynamic Equations. Series in Mathematical Analysis and Applications, Taylor & Francis, Ltd., London, 2003. 
MR 1965832 | 
Zbl 1043.34032 
[2] Agarwal R.P., Grace S.R., O'Regan D.: 
On nonoscillatory solutions of differential inclusions. Proc. Amer. Math. Soc. 131 1 (2003), 129-140. 
MR 1929032 | 
Zbl 1009.47052 
[3] Agarwal R.P., Grace S.R., O'Regan D.: 
Oscillation criteria for sublinear and superlinear second order differential inclusions. Mem. Differential Equations Math. Phys. 28 (2003), 1-12. 
MR 1986714 | 
Zbl 1059.34008 
[4] Bainov D.D., Simeonov P.S.: 
Systems with Impulse Effect. Ellis Horwood Ltd., Chichister, 1989. 
MR 1010418 | 
Zbl 0714.34083 
[5] Bainov D., Simeonov P.: 
Oscillations Theory of Impulsive Differential Equations. International Publications Orlando, Florida, 1998. 
MR 1459713 
[6] Benchohra M., Boucherif A.: 
Initial value problems for impulsive differential inclusions of first order. Differential Equations Dynam. Systems 8 (2000), 51-66. 
MR 1858768 | 
Zbl 0988.34005 
[7] Benchohra M., Henderson J., Ntouyas S.K.: 
On first order impulsive differential inclusions with periodic boundary conditions. Dyn. Contin. Discrete Impuls. Syst. Ser. A Math. Anal. 9 3 (2002), 417-427. 
MR 1897802 | 
Zbl 1017.34008 
[8] Benchohra M., Ntouyas S.K.: 
The lower and upper solutions method for first order differential inclusions with nonlinear boundary conditions. J. Inequal. Pure Appl. Math. 3 (2002), 1 Article 14, 8 pp. 
MR 1888929 | 
Zbl 1003.34013 
[9] Benchohra M., Henderson J., Ntouyas S.K., Ouahab A.: 
Upper and lower solutions method for first order impulsive differential inclusions with nonlinear boundary conditions. Comput. Math. Appl. 47 (2004), 1069-1078. 
MR 2060337 | 
Zbl 1068.34009 
[10] Bohnenblust H.F., Karlin S.: 
On a theorem of Ville. Contributions to the theory of games. pp.155-160, Annals of Mathematics Studies, no. 24. Princeton University Press, Princeton, N.J., 1950. 
MR 0041415 
[11] Deimling K.: 
Multivalued Differential Equations. Walter De Gruyter, Berlin-New York, 1992. 
MR 1189795 | 
Zbl 0820.34009 
[12] Erbe L.H., Kong Q.K., Zhang B.G.: 
Oscillation Theory for Functional Differential Equations. Marcel Dekker, New York, 1995. 
MR 1309905 | 
Zbl 0821.34067 
[13] Graef J.R., Karsai J.: 
On the oscillation of impulsively damped halflinear oscillators. Proc. Sixth Colloquium Qual. Theory Differential Equations, Electron. J. Qual. Theory Differential Equations no. 14 (2000), 1-12. 
MR 1798664 | 
Zbl 0971.34022 
[14] Graef J.R., Karsai J.: 
Oscillation and nonoscillation in nonlinear impulsive systems with increasing energy. in Proceeding of the Third International Conference on Dynamical systems and Differential Equations, Discrete Contin. Dynam. Syst. 7 (2000), 161-173. 
MR 1798664 
[15] Graef J.R., Karsai J., Yang B.: Nonoscillation results for nonlinear impulsive systems with nondecreasing energy. Dyn. Contin. Discrete Impuls. Systems, to appear.
[16] Gyori I., Ladas G.: 
Oscillation Theory of Delay Differential Equations with Applications. Clarendon Press, Oxford, 1991. 
MR 1168471 
[17] Hu Sh., Papageorgiou N.: 
Handbook of Multivalued Analysis. Volume I: Theory, Kluwer, Dordrecht, Boston, London, 1997. 
MR 1485775 | 
Zbl 0943.47037 
[18] Ladde G.S., Lakshmikantham V., Zhang B.G.: 
Oscillation Theory for Differential Equations with Deviating Arguments. Marcel Dekker, New York, 1987. 
MR 1017244 
[19] Lasota A., Opial Z.: 
An application of the Kakutani-Ky Fan theorem in the theory of ordinary differential equations. Bull. Acad. Pol. Sci. Ser. Sci. Math. Astronom. Phys. 13 (1965), 781-786. 
MR 0196178 | 
Zbl 0151.10703 
[20] Lakshmikantham V., Bainov D.D., Simeonov P.S.: 
Theory of Impulsive Differential Equations. World Scientific, Singapore, 1989. 
MR 1082551 | 
Zbl 0719.34002 
[21] Samoilenko A.M., Perestyuk N.A.: 
Impulsive Differential Equations. World Scientific, Singapore, 1995. 
MR 1355787 
[22] Yong-shao C., Wei-zhen F.: 
Oscillation of second order nonlinear ODE with impulses. J. Math. Anal. Appl. 20 (1997), 150-169. 
MR 1449514 
[23] Zeidler E.: 
Nonlinear Functional Analysis and Applications, Fixed Point Theorems. Springer, New York, 1986. 
MR 0816732