http://www.businessdictionary.com/search.php?q=Shungite&cx=002109824679542468969%3Antvpz2hrzm0&cof=FORID%3A9&ie=UTF-8

https://www.google.lk/search?q=black+diamond&espv=2&biw=1024&bih=653&source=lnms&tbm=isch&sa=X&ved=0ahUKEwj9h6-JxcnLAhWNcI4KHQA5CA0Q_AUIBigB

http://www.leibish.com/the-gruosi-diamond-article-272

http://www.healing-crystals-for-you.com/shungite.html

https://collidecolumn.wordpress.com/2014/08/15/when-worlds-collide-117-once-and-future-organic-in-sri-lanka/

https://collidecolumn.wordpress.com/2013/02/17/when-worlds-collide-54-what-if-upali-wijewardene-didnt-disappear/

http://dbsjeyaraj.com/dbsj/archives/38568

https://books.google.lk/books?id=5xsnq5NW0IcC&pg=PA465&lpg=PA465&dq=why+did+upali+wijewardene+plane+went+fast+before+missing&source=bl&ots=j_CIryrmrH&sig=-Zyhfd1B1p6bDQNLs8fJ80KAys8&hl=en&sa=X&ved=0ahUKEwiAq8GyoKXLAhVBVI4KHTk7AS4Q6AEINjAE#v=onepage&q=why%20did%20upali%20wijewardene%20plane%20went%20fast%20before%20missing&f=false

https://www.coursehero.com/file/8484207/Upali-fiat-127-Year-1979/