1. Cox, D.R., Renewal Theory, New York: Wiley, 1962.
2. Xiangming, Q. and An, X, Research on renewal function H(t) of general machine fault and its application, Proc. Int. Conf. on Digital Manufacturing and Automation (ICDMA), Changcha, 2010, vol. 2, pp. 268–270.
3. Garribba, S., Reina, G., and Volta, G, Availability of repairable units when failure and restoration rates age in real time, IEEE Trans. Reliab., 1976, vol. 25, no. 2, pp. 88–94.
4. German, R. and Telek, M., Formal relation of Markov renewal theory and supplementary variables in the analysis of stochastic Petri nets, Proc. 8th Int. Workshop on Petri Nets and Performance Models, Zaragoza, 1999, pp. 64–73.
5. Stupak, V, The analysis of restoration time for electronic devices of control systems, Proc. Int. Siberian Conf. on Control and Communications, SIBCON 2009, Tomsk, 2009, pp. 270–274.