Phoboo, S. and Jha, P.K. 2011. Trade and Sustainable Conservation of <i>Swertia chirayita</i> (Roxb. ex Fleming) h. Karst in Nepal. Nepal Journal of Science and Technology. 11, (Jan. 2011), 125–132. DOI:https://doi.org/10.3126/njst.v11i0.4134.