1. Process capability index: Recent developments;Kocherlakota;Sankya: The Indian Journal of Statistics,1992
2. Lower confidence limits on process capability indices;Chou;Journal of Quality Technology,1990
3. Supplier selection based on bootstrap confidence regions of process capability indices;Polansky;International Journal of Reliability, Quality, and Safety Engineering,2003
4. Cheng SW. Practical implementation of the process capability indices. Technical Report, Department of Statistics, University of Manitoba, Canada, 1996.