R. Mehmood, M. A. Bhatti, K. R. Kazmi, A. Mehmood, S. T. Sheikh, and S. A. Shah, “Mineralogical and Textural Characteristics of Kakul (Hazara) Phosphate Rock, NWFP, Pakistan: Mineralogy of Kakul Phosphate Rock”, Pakistan Journal of Scientific & Industrial Research, vol. 53, no. 6, pp. 303–310, Dec. 2010.