P. P. Mishra, “Mineralogical and Geochemical Studies on Manganese Ores from Roida Region, Keonjhar Dist, Orissa with Special Reference to Their Optimum Utilization,” Unpublished Thesis, Utkal University, Orissa, 2005.
 G. V. Rao, B. K. Mohapatra and A. K. Tripathy, “Enrichment of the Manganese Content by Wet High Intensity Magnetic Separator from Chikla Manganese Ore, India,” Magnetic and Electrical Separation, Vol. 9, No. 2, 1988, pp. 69-82. doi:10.1155/1998/45169
 P. P. Mishra, B. K. Mohapatra and K. Mahanta, “Upgradation of Low-Grade Siliceous Manganese Ore from Bonai-Keonjhar Belt, Orissa, India,” Journal of Minerals & Materials Characterization and Engineering, Vol. 8, No. 1, 2009, pp. 47-56.