@incollection{n-gv-07,
 author = {Nöllenburg, Martin},
 booktitle = {Human-Centered Visualization Environments},
 chapter = {6},
 doi = {10.1007/978-3-540-71949-6_6},
 editor = {Kerren, Andreas and Ebert, Achim and Meyer, Joerg},
 pages = {257-294},
 publisher = {Springer Berlin Heidelberg},
 series = {LNCS},
 title = {Geographic Visualization},
 volume = {4417},
 year = {2007}
}