1. Biedenweg, F. M. (1981).Warranty Analysis: Consumer Value Vs Manufacturers Cost.Unpublished Ph.D. thesis, Stanford University, USA.
2. Blischke, W. R. and Murthy, D. N. P. (1994).Warranty Cost Analysis.Marcel Dekker, New York.
3. Blischke, W. R. and Murthy, D. N. P. (1996).Product Warranty Handbook.Marcel Dekker, New York.
4. Blischke, W. R. and Murthy, D. N. P. (2000).Reliability: modeling, prediction and optimisation.NewYork, Wiley.
5. Nelson, W. (1982).AppliedLifeData Analysis.Wiley, New York.