@inproceedings{ball2009pie,
  author = {Alex Ball},
  title = \{Provenance in Engineering: Industrial perspectives on the provenance of design data},
  date = {2009-04-20},
  booktitle = \{E-Science Institute Workshop: Use Cases for Provenance in eScience},
  venue = {Edinburgh},
  url = \{http://www.nesc.ac.uk/action/esi/download.cfm?index=4047}
}