A Collaborative Tool for Synchronous Distance Education. - Andres Agudelo; Lina Escobar; Juliana Restrepo; Andres Quiroz; Helmuth Trefftz (CATE, 2004)

Telepresence support for synchronous distance. - Juliana Restrepo; Helmuth Trefftz (VRST, 2005)

Distance Interaction in Education Processes using a Telepresence Tool. - Fáber D. Giraldo; Ángela Jiménez; Helmuth Trefftz; Juliana Restrepo; Pedro Esteban (EIAT/IETA, 2008)

Training Geometry Teachers with Support of a Telepresence Tool. - Pedro Esteban; Juliana Restrepo; Helmuth Trefftz (Innovative Techniques in Instruction Technology, E-learning, E-assessment, and Education, 2008)