@incollection{B13,
  key =		 {B13},
  author        = {Adam Pease and Christoph Benzm\"uller},
  editor        = {Adam Pease},
  booktitle     = {Ontology: A Practical Guide},
  chapter       = {Knowledge Engineering Tools},
  publisher     = {Articulate Software Press, Angwin, CA, USA},
  year          = {2011},
  pages         = {171-214}
}