@article{MCHS09a,
  title = "Representing Ontologies Using Description Logics, Description Graphs, and Rules",
  author = "Boris Motik and Bernardo {Cuenca Grau} and Ian Horrocks and Ulrike Sattler",
  year = "2009",
  journal = "Artificial Intelligence",
  number = "14",
  pages = "1275--1309",
  url = "download/2009/MCHS09a.pdf",
  volume = "173",
  doi = "10.1016/j.artint.2009.06.003",
}