1. Antony, J.: Six sigma for service processes. Bus. Process Manage. J. 12(2), 234–248 (2006)
2. Antis, D., Slusky, L., Creveling, C.M.: Design for Six Sigma. Printed in Pearson Education Inc, New Delhi, India (2003)
3. Prashar, A.: Adoption of six sigma DMAIC to reduce the cost of poor quality. Int. J. Prod. Perform. Manage. 63, 103–126 (2014)
4. Breyfogle, F., Cupello, J., Meadows, B.: Managing Six Sigma: A Practical Guide to Understanding, Assessing, and Implementing the Strategy that Yields Bottom-Line Successes. Wiley, New York (2001)
5. Boonsuk, W., Frank, M.C.: Automated fixture design for a rapid machining process. Rapid Prototyp. J. 5(2), 111–125 (2009)