@article{de2005semantic,
  title = "The semantic grid: Past, present, and future",
  author = "De Roure and David and Jennings, Nicholas R and Shadbolt, Nigel R",
  year = "2005",
  journal = "Proceedings of the IEEE",
  number = "3",
  pages = "669--681",
  publisher = "IEEE",
  volume = "93",
}