@article{key1,
  title = "A model-driven approach to automatic conversion of physical units",
  author = "Jonathan Cooper and Steve McKeever",
  year = "2008",
  issn = "0038-0644",
  journal = "Softw. Pract. Exper.",
  number = "4",
  pages = "337-359",
  publisher = "Wiley",
  volume = "38",
  doi = "10.1002/spe.828",
}