@inproceedings{MaKH10a,
  title = "Tractable Extensions of the Description Logic $\mathcal{EL}$ with Numerical Datatypes",
  author = "Despoina Magka and Yevgeny Kazakov and Ian Horrocks",
  year = "2010",
  booktitle = "Proc.\ of the Int.\ Joint Conf.\ on Automated Reasoning (IJCAR~2010)",
  editor = "J\"{u}rgen Giesl and Reiner H\"{a}hnle",
  pages = "61--75",
  publisher = "Springer",
  series = "Lecture Notes in Artificial Intelligence",
  url = "download/2010/MaKH10a.pdf",
  volume = "6173",
}