1. http://www.airbus.com/media/annual_review.asp
2. http://www.forbes.com/newswire/2003/08/05/rtr1048516.html
3. Womack J, Jones D, Ross D (November 1991) The machine that changed the world: the story of lean production system. Harper Collins
4. Lean Enterprise Institute. ( http://www.lean.org/Lean/Community/ )
5. Toyota Company, Creating Sustainable Advantage: The Toyota Philosophy and Effects. ( http://www.toyota.co.jp/en/special/index.html )