@conference{757286,
  author = {Vincent Hu and David Ferraiolo and Karen Scarfone},
  title = {Access Control Policy Combinations for the Grid Using the Policy Machine},
  year = {2007},
  month = {2007-05-14 00:05:00},
  publisher = {Seventh IEEE International Symposium on Cluster Computing and the Grid (CCGrid 2007), , USA},
  url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=50948},
  language = {en},
}