Limbu, D.K. and Shang, Z.-H. 2017. Estimating the population density of the Himalayan Rangeland weed Swertia ciliata (G. Don) Burtt.: An impact of topography and disturbance. Nepalese Journal of Biosciences. 7, 1 (Jun. 2017), 26–34. DOI:https://doi.org/10.3126/njbs.v7i1.41756.