@inproceedings{bfk-hmsn-09,
 author = {Tobias Baumgartner and S{\'a}ndor P. Fekete and Alexander Kr{\"o}ller},
 title = {Hallway Monitoring with Sensor Networks},
 booktitle = {SenSys '09: Proceedings of the 7th ACM conference on Embedded network sensor systems},
 year = {2009},
 pages = {331--332},
 publisher = {ACM}
}