Santosh, M. “Granite-Molybdenite System of Ambalavayal, Kerala: Part II. Nature of Mineralization, Sulphur Isotopes, Fluid Characteristics and Genetic Model”. Journal of Geological Society of India, vol. 32, no. 3, Sept. 1988, pp. 191-13, https://geosocindia.com/index.php/jgsi/article/view/66212.