De Silva Jayasuriya, S. Reduplication in Asian Portuguese Creoles. Creolistics Workshop. University of Westminster. 9-11 Apr. 1999.
De Silva Jayasuriya, S. Tense Mood Aspect Markers in Asian Portuguese Creoles: A Comparison. The Third Association of Linguistics Typology Conference. University of Amsterdam. 26-28 Aug. 1999.
De Silva Jayasuriya, S. English Borrowings in Sri Lanka Portuguese Creole. ESSE 5 Conference. University of Helsinki. 28 Aug. 2000.
De Silva Jayasuriya, S. A Comparison of 19th century and 20th century Sri Lanka Portuguese Creole. Conference of the Association of Portuguese and Spanish-based Creoles. University of Coimbra. 28-29 June 2001.