1. A. Khedidja, Study of the vulnerability of the lake limestone aquifer in the region of Bir El Arch, W. Setif (Magister thesis). Univ. Tebessa, Algeria, 2001, 102p.
2. T.H. Debieche, Changes in water quality (salinity, nitrogen and heavy metals) due to salt pollution, agricultural and industrial. Application to the lowlands of Seybouse Nort-East of Algeria (PhD thesis). U. F. R. Science and Technology, Univ. Franche-Comte, Besançon, 2002. 235p.
3. W. Stumm, J.J. Morgan, Aquatic Chemistry, 3rd ed., Wiley-Interscience, New York, NY, 1996. 1022p.
4. S. Bensouilah, Contribution to the Hydrogeological Study of Sétif High Plains through the Upper Valley of the River Upstream of Wadi Rhumel Athménia. Th.Magi.Univ.Constantine, 1995. 184p.