@article{TUW-120038, author = {Gartner, Georg and Radoczky, Verena and Retscher, G{\"u}nther}, title = {Location technologies for pedestrian navigation}, journal = {GIS Development}, year = {2005}, volume = {9}, number = {4}, pages = {22--25}, url = {http://www.gisdevelopment.net/magazine/years/2005/apr/location.htm}, note = {invited} }