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title = {{The optimal k-covering tag deployment for {RFID}-based localization}},  journal = {Journal of Network and Computer Applications},  }  @inproceedings{Johansson_2009,  doi = {10.1109/robot.2009.5152737},  url = {http://dx.doi.org/10.1109/robot.2009.5152737},  year = {2009},  month = {may},  publisher = {Institute of Electrical {\&} Electronics Engineers ({IEEE})},  author = {R. Johansson and A. Saffiotti},  title = {{Navigating by stigmergy: A realization on an {RFID} floor for minimalistic robots}},  booktitle = {2009 {IEEE} International Conference on Robotics and Automation},  }