Olero, J. N. K. ., G. M. . Simiyu, E. C. . Kipkorir, and J. . Wakhisi. “Heavy Metal Content in Scalp Hair of People Living in Fluorspar Mining Belt in Elgeyo Marakwet County, Kenya”. Africa Environmental Review Journal, vol. 3, no. 1, Dec. 2018, pp. Pg 43-50, doi:10.2200/aerj.v3i1.62.