@incollection{TUW-175176, author = {Ortag, Felix}, title = {Variables of Aesthetics in Maps}, booktitle = {Cartography and Art}, year = {2009}, editor = {Cartwright, William and Gartner, Georg and Lehn, Antje}, pages = {123--133}, publisher = {Springer}, address = {Berlin Heidelberg}, isbn = {9783540685678}, doi = {10.1007/9783540685692}, keywords = {Cartography, Desing, Aesthetics, Map Design} }