1. J. W. Tukey, Exploratory Data Analysis (Addison-Wesley, (1977).
2. D. C. Hoaglin, F. Mosteller, and J. W. Tukey, Understanding robust and exploratory data analysis, Vol. 3 (Wiley New York, (1983).
3. M. Frigge, D. C. Hoaglin, and B. Iglewicz, The American Statistician 43, 50–54 (1989).
4. A. Kimber, Applied Statistics 21–30 (1990).
5. Resistant outlier rules and the non-Gaussian case