1
Title:A Synthetic Scaled Weighted Variance Control Chart for Monitoring the Process Mean of Skewed Populations
Source:Communications in Statistics - Simulation and Computation
   Volume 38, Issue 8, 2009, Pages 1659 - 1674
Authors: Philippe Castagliolaa; Michael B. C. Khoob
Link:http://www.informaworld.com/smpp ... ~content=a913139792

2
Title:Robustness of R-Chart to Non Normality
Source:Communications in Statistics - Simulation and Computation
   Volume 36, Issue 5, 2007, Pages 1089 - 1098
Authors: Shih-Chou Kaoa; Chuanching Hob
DOI: 10.1080/03610910701540003
Link:http://www.informaworld.com/smpp ... ~content=a781631569

3
Title: Exponentially Weighted Moving Average Chart for Skewed Distribution
Source: Asian Journal on Quality, Vol. 10 Iss: 3, pp.87 - 97
Author(s): Wang Hai-yu, (Economics and Management School, Zhongyuan University of Technology, Zhongyuan 450007, P.R. China)
Link:http://www.emeraldinsight.com/journals.htm?articleid=1845988&;show=pdf