@article{GrauJAIR08,
  title = "Modular Reuse of Ontologies: Theory and Practice",
  author = "Bernardo {Cuenca Grau} and Ian Horrocks and Yevgeny Kazakov and Ulrike Sattler",
  year = "2008",
  journal = "J. of Artificial Intelligence Research (JAIR)",
  pages = "273-318",
  url = "http://www.jair.org/media/2375/live-2375-3703-jair.pdf",
  volume = "31",
}