J.E. Ruiz-Castro and Q.L. Li (2011). Algorithm for a general discrete k-out-of-n system subject to several types of failure with an inﬁnite number of repairpersons. European Journal of Operational Research, Vol. 211, 97–111.
A discrete@k-out-of-n:@G@system with multi-state components is modelled by means of block-structured Markov chains. An indefinite number of repairpersons are assumed and PH distributions for the lifetime of the units and for the repair time are considered. The units can undergo two types of failures, repairable or non-repairable. The repairability of the failure can depend on the time elapsed up to failure. The system is modelled and the stationary distribution is built by using