Festival-si: A Sinhala Text-to-Speech System. - Ruvan Weerasinghe; Asanka Wasala; Viraj Welgama; Kumudu Gamage (TSD, 2007)

NLP Applications of Sinhala: TTS & OCR. - Ruvan Weerasinghe; Asanka Wasala; Dulip Lakmal Herath; Viraj Welgama (IJCNLP, 2008)

Corpus-based Sinhala Lexicon. - Ruvan Weerasinghe; Dulip Lakmal Herath; Viraj Welgama (ALR7@IJCNLP, 2009)

Defining the Gold Standard Definitions for the Morphology of Sinhala Words. - Viraj Welgama; Ruvan Weerasinghe; Mahesan Niranjan (Res. Comput. Sci., 2015)

Aspect Oriented Suggestion Extraction from Online Reviews. - Tharushi Jayasekara; Ruvan Weerasinghe; Viraj Welgama (ICMLA, 2021)