1
Title:Multivariate CUSUM and EWMA Control Charts for Skewed Populations Using Weighted Standard Deviations 
Source:Communications in Statistics - Simulation and Computation 
Volume 36, Issue 4, 2007, Pages 921 - 936 
Author: Young Soon Changa 
DOI: 10.1080/03610910701419596 
Link:
http://www.informaworld.com/smpp ... 83545~frm=titlelink
2
Title:Economic statistical design for x-bar control charts under non-normal distributed data with Weibull in-control time 
Authors: Chen, F L1; Yeh, C H1
Source: Journal of the Operational Research Society, Volume 62, Number 4, 10 April 2011 , pp. 750-759(10)
Publisher: Palgrave Macmillan
Link:
http://chinesesites.library.inge ... t00018?crawler=true