Khadka, U.R. and Ramanathan, A.L. 2013. Depthwise variation of carbon, nitrogen and biogenic silica in sediment from lakes of Pokhara Valley, Nepal. Nepal Journal of Environmental Science. 1, 1 (Dec. 2013), 40–47. DOI:https://doi.org/10.3126/njes.v1i1.36547.