4Clements J A. Process capability calculations for non-normal distributions[J]. Quality Progress, 1989, 22(2):49-55.
5K S Krishnamoorthi, Suraj Khatwani. A capability index for all occasions [A]. Annual Quality Congress Proceedings[Cl. Milwaukee: American Society for Quality, 2000. 77-81.
6Schneider Helmut, James Pruett, Cliff Legrange. Uses of process capabilit, 8(2): 225-235.
7Zachary G Stoumbos. Process capability indices: Overview and extensions [ J ]. Nonlinear Analysis: RealWorld Applications,2002, 3(2) : 191-210.
8Gunter B H. The use and abuse of Cpk[J]. Quality Progress,1989, 22(3) : 108-109.
9Mardia KV, Kent JT, Biddy JM. Multivariate analysis [M].London: Academic Press, 1979.35 - 40.
10Luis Annando Rosas Rivera, Norma F Hubele, Frederick P Lawrence. Cvk index estimation using data transformation[A].Proceedings of 17th International Conference on Computers and Industrial Engineering [ C ]. Phoenix, United States: Pergamon Press, 1995. 55-58.