SMD Perera. CD Wijayarathna, WSS Wijesundera, G Senevirathe, SMT Jayasena.  Biodegradation of crude oil by natural microbial communities comprising Aspergillus and Bacillus species. Proceedings of the 1^st bi-ennial conference of the College of Biochemists of Sri Lanka.2018. pp19. (PP-4.)