Portals: increasing visibility in virtual worlds. - Ioannis Kotziampasis; Nathan Sidwell; Alan Chalmers (SCCG, 2003)

Portals: Aiding Navigation in Virtual Museums. - Ioannis Kotziampasis; Nathan Sidwell; Alan Chalmers (VAST, 2003)

Seamlessly integrated distributed shared virtual environments. - Ioannis Kotziampasis (2003)

Seamlessly integrated distributed shared virtual environments. - Ioannis Kotziampasis; Nathan Sidwell; Alan Chalmers (SCCG, 2004)

Seamless interconnection of distributed virtual worlds. - Ioannis Kotziampasis; Alan Chalmers (SCCG, 2007)