https://aluthsl.com/%e0%b6%b4%e0%b6%b1%e0%b7%8f%e0%b6%9a%e0%b6%a9%e0%b7%94%e0%b7%80-%e0%b6%ad%e0%b6%b9-%e0%b7%83%e0%b6%b1%e0%b7%8a%e0%b6%b1%e0%b7%83-panakaduwa-copper-plate-grant
පනාකඩුව තඹ සන්නස -Panakaduwa Copper Plate Grant