@inproceedings{ tu16:sok-robocalls,
  author = {Huahong Tu and Adam Doup\'e and Ziming Zhao and Gail-Joon Ahn},
  title = {{SoK: Everyone Hates Robocalls: A Survey of Techniques against Telephone Spam}},
  booktitle = {{Proceedings of the 37th IEEE Symposium on Security and Privacy}}, 
  month = May,
  year = 2016}