Santos-Fernández, Edgar, and Michele Scagliarini. “MPCI: An R Package for Computing Multivariate Process Capability Indices”. Journal of Statistical Software 47, no. 7 (April 25, 2012): 1–15. Accessed November 21, 2024. https://www.jstatsoft.org/index.php/jss/article/view/v047i07.