1. OECD OECD Guidelines for the Testing of Chemicals 2014 http://www.oecd.org/chemicalsafety/testing/oecdguidelinesforthetestingofchemicals.htm
2. State of the art on alternative methods to animal testing from an industrial point of view: ready for regulation?;Ashton;Altex,2014
3. Russell and Burch's 3Rs then and now: the need for clarity in definition and purpose;Tannenbaum;J Am Assoc Lab Anim Sci,2015
4. Seventh Report from the Commission to the Council and the European Parliament on the Statistics on the number of animals used for experimental and other scientific purposes in the member states of the European Union COM (2013)859/final
5. Nuffield Council on Bioethics The Ethics of Research Involving Animals 2005