Devaraju, T. C., V. H. Uttangi, and J. J. M. M. M. Coolen. 1981. “Hogbomite from Fe-Ti Deposits of Madangere, Ankola Taluk, Karnataka”. Journal of Geological Society of India 22 (9):439-43. https://geosocindia.com/index.php/jgsi/article/view/64894.