1. Correspondence analysis applied to environmental data sets;Avila,1991
2. I'Analyse des donnees, Tomm II, I'Andyse des correspondances;Benzecri,1973
3. NOAA-NCDC, hourly precipitation-Western Region,1992
4. Statistical computing software reviews;Goldstein;The American Statistician,1991
5. Multivariate descriptive statistical analysis;LeBart,1984