@INPROCEEDINGS { AUTHOR = "Pedro Antunes and Gustavo Zurita and Nelson Baloian", TITLE = "A Model for Designing Geocollaborative Artifacts and Applications", EDITOR = "Luis Carri and co and Nelson Baloian and Benjamin Fonseca", BOOKTITLE = "15th Collaboration Researchers' International Workshop on Groupware (CRIWG)", PAGES = "278-294", MONTH = "Sep", YEAR = "2009", ADDRESS = "Peso da Regua, Portugal", PUBLISHER = "Springer-Verlag", SERIES ="Lecture Notes in Computer Science", NUMBER = "5784", ISBN = "978-3-642-04215-7", }