@article{heunen:embedding,
  title = "An embedding theorem for Hilbert categories",
  author = "Chris Heunen",
  year = "2009",
  crossref = "preprint available as arxiv:0811.1448",
  journal = "Theory and Applications of Categories",
  number = "13",
  pages = "321--344",
  url = "http://www.tac.mta.ca/tac/volumes/22/13/22-13.pdf",
  volume = "22",
}