Gupta, Anupendu. “Palaeozoic Metallogeny in Tethyan Black Mountain Basin, Bhutan Himalaya and Its Regional Implication”. Himalayan Journal of Sciences 2, no. 4 (February 8, 2008): 150–151. Accessed May 17, 2024. https://nepjol.info/index.php/HJS/article/view/846.