Viswanathan, S., P. Jagadeesan, K. S. Misra, and P. V. Ramesh Babu. 2006. “New Occurrence of Manganocolumbite from Late Proterozoic Pegmatites of Bhurpidungri, Jharsuguda District, Orissa”. Journal of Geological Society of India 67 (4):547-49. https://geosocindia.com/index.php/jgsi/article/view/82026.