The GRASP 3: Graphical Reliability Analysis Simulation Program. Version 3: A users' manual and modelling guide
Alternate definitions of system failure create complex analysis for which analytic solutions are available only for simple, special cases. The GRASP methodology is a computer simulation approach for solving all classes of problems in which both failure and repair events are modeled according to the probability laws of the individual components of the system.
Phillips, D. T.↗