An optimal maintenance policy for skipping imminent preventive maintenance for systems experiencing random failures. - Ali Haj Shirmohammadi; Charles Ernie Love; Zhe George Zhang (J. Oper. Res. Soc., 2003)

A Computational Model for Determining the Optimal Preventive Maintenance Policy With Random Breakdowns and Imperfect Repairs. - Ali Haj Shirmohammadi; Zhe George Zhang; Ernie Love (IEEE Trans. Reliab., 2007)