@inproceedings{willkomm2008primary,
  author = {Willkomm, Daniel and Machiraju, Sridhar and Bolot, Jean and Wolisz, Adam},
  doi = {10.1109/dyspan.2008.48},
  title = {{Primary Users in Cellular Networks: A Large-Scale Measurement Study}},
  publisher = {IEEE},
  address = {Chicago, IL},
  booktitle = {IEEE Symposium on New Frontiers in Dynamic Spectrum Access Networks (DySPAN 2008)},
  month = {10},
  year = {2008},
}