Yagyanath Rimal, and Sakuntala Pageni. “Cartographic Map Abstraction Using R Programming (Literacy Rate, HDI and Poverty Data Interpolation of Nepal)”. International Journal on Orange Technologies, Vol. 1, no. 2, Nov. 2019, pp. 19-26, https://journals.researchparks.org/index.php/IJOT/article/view/357.