R. Tekle-Haimanot, Z. Melaku, H. Kloos, C. Reimann, W. Fantaye, L. Zerihun and K. Bjorvatn, “The Geographical Distribution of Florid Surface and Groundwater in Ethiopia with an Emphasis on the Rift Valley,” Science of the Total Environment, Vol. 367, No. 1, 2005, pp. 182-190.
 C. Riemann, K. Bjorvatn, B. Frengstad, Z. Melaku, R. Tekle-Haimanot and U. Siewers, “Drinking Water Quality in the Ethiopian Section of the East African Rift Valley,” Science of the Total Environment, Vol. 311, No. 1-3, 2003, pp. 65-80.
 B. Olsson, “Dental Findings in High Fluoride Areas of Ethiopia,” Community Dental and Oral Epidemiology, Vol. 7, 1979, pp. 51-56.
 F. Wondwossen, A. N. Astrom, A. Bardsen and K. Bjorvatn, “The Relationship between Dental Caries and Dental Fluorosis in Areas with Moderate- and High-Fluoride Drinking Water in Ethiopia,” Community Dent oral Epidemiology, Vol. 32, 2004, pp. 337-344.
 Z. Melaku, G. Assefa, G. Astrom, F. Enquselassie, K. Bjorvatn and R. Tekle Haimanot, “Epidemiological of skeletal fluorosis in wonji Shoa Sugar Estate, Wonji, Ethiopia, A Community Based Survey,” Ethiopian Medical Journal, Vol. 50, 2012, pp. 307-313.
 A. H. Siddiqui, “Fluorosis in Nalgona District, Hyderabad (Deccan),” British Medical Journal, Vol. 1408, 1955, pp. 1408-1414.
 S. S. Jolly, B. M. Singh, O. C. Mathur and K. C. Malhotra, “Epidemiological, Clinical, Biochemical Study of Endemic Dental and Skeletal Fluorosis in Punjab,” British Medical Journal, Vol. 4, 1968, pp. 427-429.
 R. Tekle-Haimanot, “Neurological Complications of Endemic Skeletal Fluorosis, with Special Emphasis on Radiculomyelopathy,” Paraplegia, Vol. 28, 1990, pp. 244-251. http://dx.doi.org/10.1038/sc.1990.31
 J. Littleton, “Paleopathology of Skeletal Fluorosis,” American Journal of Physical Anthropology, Vol. 109, No. 4, 1999, pp. 465-483.
 M. Teotia, S. P. Teotia and K. P. Singh, “Endemic Fluoride Toxicity and Dietary Calcium Deficiency Interaction Syndromes of Metabolic Bone Diseases and Deformities in India,” Indian Journal of Pediatrics, Vol. 65, No. 3, 1998, pp. 371-381.
 J. M. Pettifor, C. M. Schnitzler, F. P. Ross and G. P. Moodley, “Endemic Skeletal Fluorosis in Children: Hypocalcemia and the Presence of Renal Resistance in Parathyroid Hormone,” Bon Miner, Vol. 7, No. 3, 1989, pp. 75-88. http://dx.doi.org/10.1016/0169-6009(89)90084-6
 G. N. Opinya, N. Bwibo, J. Valderhaug, J. M. Birkeland and P. Lokken, “Intake of Fluoride through Food and Beverages by Children in a High Fluoride (9 ppm) Area in Kenya,” Discovery and Innovation, Vol. 3, 1991, pp 71-77.
 M. Ando, M. Tadano, S. Asanuma, K. Tamura, S. Matsushima, T. Watanabe, T. Kondo, S. Sakurai, R. Ji, C. Liang and S. Cao, “Health Effect of Indoor Fluoride Pollution from Coal Burning in China,” Environmental Health Perspectives, Vol. 106, 1998, pp. 239-244.
 L. Mabelya, W. H. van Palenstein Helderman, M. A. van’t Hof and K. G. Konig, “Dental Fluorosis and the Use of a High Fluoride-Containing Trona Tenderizer,” Community Dentistry & Oral Epidemiology, Vol. 25, No. 2, 1997, pp. 170-117.
 M. E. Kaseva, “Contribution of Trona (Magadi) into Excessive Fluorosis—A Case Study in Maji ya Chai Ward, Northern Tanzania,” Science of the Total Environment, Vol. 366, No. 1, 2006, pp. 92-100.
 M. K. Malde, L. Zerihun, K. Julsham and K. Bjorvatn, “Fluoride Content in Selected Food Items from Five Areas of East Africa,” Journal of Food composition and Analysis, Vol. 10, No. 3, 1997, pp. 233-245.
 A. S. Nuguide, G. S. Saiprasad, P. R. Naik and S. Mohanty, “An Epidemiological Study of Fluorosis in an Urban Slum Area of Nalgonda, Andra Pradesh, India,” Indian Journal of Public Health, Vol. 54, 2010, pp. 194-196. http://dx.doi.org/10.4103/0019-557X.77259
 M. K. Malde, L. Zerihun, K. Julshamn and K. Bjorvatn, “Fluoride Intake in Children Living in a High-Fluoride Area in Ethiopia-Intake through Food, International Journal of Paediatric Dentistry, Vol. 13, 2003, pp. 27-34.
 D. Meseret and F. Zewge, “Daily Dietary fluoride intake in rural villages of the Ethiopian Rift Valley, “Toxicology & Environmental Chemistry,” Vol. 95, No. 6, 2013, pp 1056-1068.
 M. K. Malde, L. Zerihun, K. Julshamn and K. Bjorvatn, “Fluoride Intake in Children Living in a High-Fluoride Area in Ethiopia-Intake through Beverages,” International Journal of Paediatric Dentistry, Vol. 13, 2003, pp. 27-34.