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Roberto Andorno, "The Precautionary Principle: A New Legal Standard for a Technological Age", Journal of International Biotechnology Law, 2004, 1, p.11-19 
Report by the UK Interdepartmental Liaison Group on Risk Assessment, 2002. 
David Appell, Scientific American, January 2001: 
The Times, July 27, 2007, 
The Times, January 15, 2005, 
Bill Durodié, Spiked, March 16, 2004: 
European Environment Agency (2001), 
, Center for Responsible Nanotechnology 2004
1998 
Science and Environmental Health Network, 
Gary E. Marchant, Kenneth L. Mossman: Arbitrary and Capricious: The Precautionary Principle in the European Union Courts. American Enterprise Institute Press 2004, ISBN 0-8447-4189-2; 
Umberto Izzo, La precauzione nella responsabilità civile. Analisi di un concetto sul tema del danno da contagio per via trasfusionale (e-book reprint) [The Idea of Precaution in Tort Law. Analysis of a Concept against the Backdrop of the Tainted- Blood Litigation], UNITN e-prints, 2007, first edition Padua, Cedam 2004.


UK Interdepartmental Liaison Group on Risk Assessment (ILGRA): The Precautionary Principle: Policy and Application 
Report of UNESCO's group of experts on the Precautionary Principle (2005) 
Max More (2010), 