1. Radioactivity and elemental analysis of carbonatite rocks from parts of Gwasi area, South Western Kenya (MSc thesis);Achola,2009
2. Thorium-to-uranium ratios as indicators of sedimentary processes: example of concept of geochemical facies;Adams;AAPG Bull.,1958
3. The Statistical Analysis of Compositional Data;Aitchison,1986
4. Chemometrics based on fuzzy logic principles in environmental studies;Astel;Talanta,2007
5. The Alkaline Igneous Complex of Jombo;Baker,1953