Naithani, A. K., and P. C. Nawani. “Landslide Hazard Zonation Mapping of Tapovan - Helong Hydropower Project Area, Garhwal Himalaya, India, Using Univariate Statistical Analysis”. Journal of Nepal Geological Society, vol. 39, Sept. 2009, pp. 59-76, doi:10.3126/jngs.v39i0.31488.