@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 = {{37th IEEE Symposium on Security and Privacy}},
        publisher = {IEEE Computer Society},
        organization = {IEEE},
        month = 5,
        year = 2016
      }