Gunathilaka, P.A.D.H.N.; Fernando, M.A.S.T.; Hapugoda, M.D.; Wijeyerathne, P.; Wickremasinghe, A.R.; Abeyewickreme, W.(Sri Lanka Association for the Advancement of Science, 2010)
Gunathilaka, P.A.D.H.N.; Fernando, M.A.S.T.; Hapugoda, M.D.; Wijeyarathne, P.; Wickremasinghe, A.R.; Abeyewickreme, W.(Sri Lanka Association for the Advancement of Science, 2013)