Sakai, T., A. P. Gajurel, B. N. Upreti, H. Tabata, N. Ooi, and H. Kitagawa. “Revised Lithostratigraphy of Fluvio-Lacustrine Sediments Comprising Northern Kathmandu Basin in Central Nepal”. Journal of Nepal Geological Society, vol. 37, Nov. 2012, pp. 25-44, https://nepjol.info./index.php/JNGS/article/view/7010.