@incollection{KPS04,
 author = {Keim, Daniel A. and Panse, Christian and Sips, Mike},
 booktitle = {Exploring Geovisualization},
 editor = {Dykes, Jason and MacEachren, Alan and Kraak, Menno-Jan},
 publisher = {Oxford: Elsevier},
 title = {Information Visualization: Scope, Techniques and Opportunities for Geovisualization},
 year = {2004}
}