1. Introduction to Saharan hydrogeology;Cornet;In Geog. Phys. And Géol. Dyn,1964
2. Statistical Factor Analysis and Related Methods, Theory and Applications. capter 3;Basilevsky,1994
3. Applied Multivariate Data Analysis;Everitt,1992
4. Probability Data Analysis and Statistics;Saporta,1990
5. Hydrogeochemical approach to study the water fluoridation of the Terminal Complex aquifer in the low Algerian Valley of M’ya (Ouargla);Nezli;Courrier du Savoir,2009