@INPROCEEDINGS{Laorden2011enhancing,

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

    title = {Enhancing Scalability in Anomaly-based Email Spam Filtering},
    
    booktitle = {Proceedings of the 8$^{th}$ Annual Collaboration, Electronic messaging, Anti-Abuse and Spam Conference (CEAS)},

    pages = {13--22},
    year = {2011}
}