Kayastha, Durgendra Man, Raja Ram Chhatkuli, and Jagat Raj Paudel. 2004. “Assessment of Accuracy of IKONOS Image Map, Traditional Orthophoto Map and Conventional Line Map of Kathmandu Valley: A Pilot Study”. Journal on Geoinformatics, Nepal 3 (1):49-51. https://doi.org/10.3126/njg.v3i1.51450.