1. Abrahams, P.W. (2002). Soils: their implication to human health. The Science of the Total Environment. 231, 1–32.
2. Abrahams, P.W. (2013). Geophagy and the in voluntary ingestion of soil. In: O. Selinus, B. Alloway, J.A. Centenoi, R.B. Finkelman, R. Fuge, U. Lindh, & P. Smedley (Eds.), Essentials of medical geology: revised edition (pp. 433–454). Dordrecht, The Netherlands: Springer
3. Aguzzi, C., Cerezo, P., Viseras, C., & Carmella, C. (2007). Use of clays as drug delivery systems: Possibilities and limitations. Applied Clay Science, 36, 22–36.
4. Berge, W., Mundt, K., Luu, H., & Boffetta, P. (2017). Genital use of talc and risk of ovarian cancer: a meta-analysis. European Journal of Cancer Prevention, 27, 248–257.
5. Brevik, E. C. (2013). Climate change, soils, and human health. In: E.C. Brevik & L.C. Burgess (Eds.). Soils and Human Health (pp. 345– 383). Boca Raton, Florida, USA: CRC Press.