Gupta, V. J., P. C. Bisaria, D. K. Chadha, G. Mahajan, S. Kumar, S. R. Kashyap, N. Kochhar, and N. S. Virdi. 1970. “Permian Fusulinids from the Himalayas”. Journal of Geological Society of India 11 (4):393-96. https://geosocindia.com/index.php/jgsi/article/view/61074.