1. Al-Ani T (1996) Mineralogy and geochemistry of hussainiyat clays and associated bauxite and ironstone deposits-western desert of Iraq. Unpublished PhD Thesis, University of Baghdad, 180p.
2. Aleva GJ (1994) Laterites: concepts, geology, morphology and chemistry. International Soil Reference and Information Centre, Wageningen, p 169
3. Al-Rawi YT, Al-Ameri TK, Al-Ani T (1997) Age and Paleoclimatic evaluation of paleokarst deposits of the Nuwaifa formation, western desert of Iraq. Iraqi Geol Jour 28(2):84–92
4. Bardossy GY (1982) Karst bauxite. Bauxite deposits on carbonate rocks. In: Developments in economic geology, vol 14. Elsevier, Amsterdam, p 441
5. Bardossy GY (1989) Paleokarst: a systematic and regional review. Elsevier and Academia, Amsterdam-Praha, p 418p