Yang-Won Lee Key-Ho Park Ryosuke Shibasaki Collaborative GIS Environment for Exploratory Spatial Data Analysis Based on Hybrid P2P Network. 330-333 2006 conf/edutainment/2006 Edutainment http://dx.doi.org/10.1007/11736639_44 db/conf/edutainment/edutainment2006.html#LeePS06