@inproceedings{WMS09-1,
  title = "On Key Agreement in Wireless Sensor Networks based on Radio Transmission Properties",
  author = "Matthias Wilhelm and Ivan Martinovic and Jens B. Schmitt",
  year = "2009",
  booktitle = "{Proceedings of the 5th Annual Workshop on Secure Network Protocols (NPSec '09)}",
  location = "Princeton, NJ, USA",
  month = "oct",
  pages = "37--42",
  publisher = "IEEE Computer Society",
}