@inproceedings{schoening2009photomap,
 author = {Sch\"{o}ning, Johannes and Kr\"{u}ger, Antonio and Cheverst, Keith and Rohs, Michael and L\"{o}chtefeld, Markus and Taher, Faisal},
 title = {PhotoMap: Using Spontaneously Taken Images of Public Maps for Pedestrian Navigation Tasks on Mobile Devices},
 booktitle = {Proceedings of the 11th International Conference on Human-Computer Interaction with Mobile Devices and Services},
 series = {MobileHCI '09},
 year = {2009},
 isbn = {978-1-60558-281-8},
 location = {Bonn, Germany},
 pages = {105--114},
 articleno = {14},
 numpages = {10},
 url = {http://doi.acm.org/10.1145/1613858.1613876},
 doi = {http://doi.acm.org/10.1145/1613858.1613876},
 acmid = {1613876},
 publisher = {ACM},
 address = {New York, NY, USA},
 keywords = {'you are here' maps, GPS, mobile camera devices, pedestrian navigation},
}