@techreport{West2002-pdt,
  author	= {West, Matthew},
  title		= {Information Modelling: An analysis of the uses and meanings of associations},
  institution	= {Shell Information Technology International Ltd, UK},
  year		= {2002},
  URL		= {http://www.matthew-west.org.uk/Documents/InformationModellingPDT2002.pdf},
  pdf		= {http://www.matthew-west.org.uk/Documents/InformationModellingPDT2002.pdf}
}