@INPROCEEDINGS{Santos2011secrypt,

    author = {Igor Santos and Carlos Laorden and Xabier Ugarte-Pedrero and Borja Sanz and Pablo G. Bringas},

    title = {Anomaly-based Spam Filtering},
    
    booktitle = {Proceedings of the 6$^{th}$ International Conference on Security and Cryptography (SECRYPT)},

    pages = {5--14},
    year = {2011}
}