1. https://www.dailymirror.lk/print/columns/Amid-tough-times-Lankan-shipping-industry-shows-growth/235-105447
2. http://www.edupub.gov.lk/Administra-tor/English/7/Geogrphy%20G%207%28%20E%29/c2.pdf
3. https://www.sciencedirect.com/science/article/abs/pii/S000925410200400X
4. https://blog.cinnamonhotels.com/5-beautiful-lakes-to-visit-in-sri-lanka/
5. https://www.reddit.com/r/srilanka/comments/r449pf/kalawewa_dam_overflow_sri_lanka/?rdt=55718