Ismail, M.M.; Premaratne, U.N.; Abeyewickreme, W.; Jayasinghe, K.S.A.; de Silva, W.A.S.; Atukorala, S.; de Abrew, K.; Dissanaike, A.S.(Malaysian Society of Parasitology and Tropical Medicine, 1991)
Abeyewickreme, W.; Hewadikaram, K.A.; Weerasena, K.H.; Premaratne, U.N.; Ismail, M.M.(Museum and Reference Centre, SEAMEO-TROPMED National Centre of Thailand, 1987)