Singh, S.K.; Rawat, G.S.; Pangtey, Y.P.S. (2000). Biodiversity Assessment of the Great Himalayan National Park, Himachal Pradesh. IN: Pangtey, Y.P.S. and Rawal, R.S. (Eds) High altitudes of Himalaya : biogeography, ecology and conservation. Gyanodaya Prakashan, Nainital. : 127-176.