@article{TUW-120987, author = {Retscher, G{\"u}nther and Mok, Esmond}, title = {Testing of Location Systems using WiFi in Indoor Environments}, journal = {Coordinates}, year = {2007}, volume = {III}, number = {10}, pages = {6--11}, url = {http://mycoordinates.org/testing-indoor-environment.php} }