A Web Interface to a Self-Study Collaborative System. - Helder Troca Zagalo; Joaquim Arnaldo Martins; Joaquim Sousa Pinto (WebNet, 1998)

Portuguese Parliamentary Records Digital Library. - Joaquim Sousa Pinto; Joaquim Arnaldo Martins; Helder Troca Zagalo; Rui José Pereira Costa (ICEIS (2), 2001)

Framework for a XML-based search system. - Pedro Almeida; Joaquim Sousa Pinto; Joaquim Arnaldo Martins; Helder Troca Zagalo (ELPUB, 2004)

Audiovisual Archive with Mpeg-7 Video Description and XML Database. - Pedro Almeida; Joaquim Arnaldo Martins; Joaquim Sousa Pinto; Helder Troca Zagalo (ICEIS (1), 2004)