@article{DelanyKBS05,
  author = "S. J. Delany and P. Cunningham and A. Tsymbal and L. Coyle",
  title = "A Case-Based Technique for Tracking Concept Drift in Spam Filtering",
  journal= "Knowledge-Based Systems",
  volume = {18},
  number = {4--5},
  pages = {187--195},
  publisher = "Elsevier",
  year = "2005"
}