@incollection{TUW-209560, author = {Huang, Haosheng and Schmidt, Manuela and Gartner, Georg}, title = {Spatial Knowledge Acquisition in the Context of GPS-Based Pedestrian Navigation}, booktitle = {Maps For The Future}, year = {2012}, pages = {127--137}, publisher = {Springer Verlag}, doi = {10.1007/978-3-642-19522-8{\_}11} }