1. Maintenance;Coetzee,1997
2. Additive hazards models in repairable systems reliability;Pijnenburg;Reliab Eng Syst Saf,1991
3. Vlok PJ. Vibration covariate regression analysis of failure time data with the Proportional Hazards Model. Master's dissertation, University of Pretoria, Pretoria, 1999.
4. Vlok PJ. Dynamic residual life estimation of industrial equipment based on failure intensity proportions. PhD dissertation, University of Pretoria, Pretoria, 2001.
5. Residual life of technical systems; diagnosis, prediction and life extension;Reinertsen;Reliab Eng Syst Saf,1996