IM@GIX: An Electronic Commerce Digital Image Bank. - Carlos Serrão; Joaquim Marques (ICEIS, 2002)

Protecting Digital Music Delivery and Consumption Using the OCCAMM Project Framework. - Carlos Serrão; Joaquim Marques; Trevor Baker; Massimo Balestri; Panos Kudumakis (WEDELMUSIC, 2002)

E-Commerce Payment Systems - An Overview. - Carlos Serrão; Pedro Fonseca; Joaquim Marques (ICEIS (4), 2003)

Digital Music Electronic Commerce - Addressing the Super Distribution Model. - Carlos Serrão; Joaquim Marques (ICETE (3), 2004)

Improving user content privacy on social networks using rights management systems. - Joaquim Marques; Carlos Serrão (Ann. des Télécommunications, 2014)

Gestão digital da propriedade intelectual de conhecimento científico e educacional - Joaquim Marques (2015)