@inproceedings{ball2009pie,
  author = {Alex Ball},
  title = {Provenance in Engineering: Industrial perspectives on the provenance of design data},
  year = {2009},
  month = apr,
  booktitle = {E-Science Institute Workshop: Use Cases for Provenance in eScience},
  note = {Edinburgh},
  url = {http://www.nesc.ac.uk/action/esi/download.cfm?index=4047}
}