Elam ME, Case KE, Kim J-M. Second Stage Short Run (X,vc) and (X,sc) Control Charts. J. Stat. Soft. [Internet]. 2004 Mar. 23 [cited 2024 Dec. 11];9(7):1-31. Available from: https://www.jstatsoft.org/index.php/jss/article/view/v009i07