1Lee Badger, Tim Grance, Robert Patt-Corner, Jeff Voas. DRAFT cloud computing synopsis and recommendations. NIST-SP800-146, 10-14, 2011.10-14.
2Kai Hwang, Geoffrey C. Fox, Jack J. Dongarra, Morgan Kaufmann. Distributed and cloud computing. From parallel processing to the internet of things, 2011, 129-130.