Nalaka, P.K., M. S. R. Akther, and G. Naveendrakumar. “Accident Hotspots in Southern Expressway of Sri Lanka: Interpolation Evaluation Using GIS”. Advances in Technology 1, no. 1 (May 31, 2021): 191–206. Accessed July 22, 2024. https://journals.sjp.ac.lk/index.php/ait/article/view/4835.