[9] James B. Rice, Jr. and Philip W. Spayd, ‘Investing in Supply Chain Security: Collateral Benefits’, mei 2005 (Massachusetts Institute of Technology) and Hau L. Lee and Seungjin Whang, ‘Higher supply chain security with lower cost: Lessons from total quality management’, International Journal of Production Economics, 2004
[9] James B. Rice, Jr. und Philip W. Spayd: „Investing in Supply Chain Security: Collateral Benefits“, Mai 2005 (Massachusetts Institute of Technology); Hau L. Lee und Seungjin Whang: „Higher supply chain security with lower cost: Lessons from total quality management“, International Journal of Production Economics, 2004.