1. Ako, T. A., Vishiti, A., Suh, C. E., Kedia, A. C., & Omang, B. O. (2017). Geological models of platinum group elements (PGE) depletion in metamorphosed ultramafic rocks of the Nyong Series, southeast Cameroon. International Journal of Mining Science, 3(4), 2–63.
2. Ashley, P., Craw, D., MacKenzie, D., Rombouts, M., & Reay, A. (2012). Mafic and ultramafic rocks, and platinum mineralisation potential, in the Longwood Range, Southland, New Zealand. New Zealand Journal of Geology and Geophysics, 55(1), 3–19.
3. Balaram, V., Singh, S. P., Satyanarayanan, M., & Anjaiah, K. V. (2013). Platinum group elements geochemistry of ultramafic and associated rocks from Pindar in Madawara Igneous Complex, Bundelkhand massif, central India. Journal of Earth System Science, 122(1), 79–91.
4. Barik, R., Kaushik, C., Malviya, V. P., Mahapatro, S. N., Shareef, M., Nitnaware, N. V., et al. (2017). Ni-Cu-PGE mineralisation in intrusive mafic rocks from Ghotitola Area within Amgaon gneissic complex, central India. Intern. Journal of Geoscience Research, 1, 65–72.
5. Barnes, S.-J., & Maier, W. D. (2002). Platinum-group elements and microstructures of normal Merensky Reef from Impala Platinum Mines, Bushveld Complex. Journal of Petrology, 43, 103–128.