1. James P. Womack and Daniel T. Jones, Lean Thinking, Simon & Schuster, 1996.
2. James P. Womack, Daniel T. Jones, and Daniel Roos, The Machine That Changed the World: The Story of Lean Production, Harper Perennial, 1990, p. 146.
3. An interesting benchmarking case for lean logistics can be found in Audie G. Lewis, Streamlining Healthcare Operations: How Lean Logistics Can Transform Health Care Organizations, Jossey-Bass, 2001.