1. European_Commission (2010) European Commission. Sixth report on the statistics on the number of animals used for experimental and other scientific purposes in the member states of the European Union COM 511. http://eur-lex.europa.eu/resource.html?uri=cellar:e76f9589-b5ae-4a05-8cd9-edda3a843bb5.0001.01/DOC_1&format=PDF
2. European_Commission (2013) European Commission. Seventh report on the statistics on the number of animals used for experimental and other scientific purposes in the member states of the European Union. http://eur-lex.europa.eu/legal-content/EN/TXT/PDF/?uri=CELEX:52013DC0859&from=EN
3. Scholz S, Sela E, Blaha L, Braunbeck T, Galay-Burgos M, García-Franco M, Guinea J, Klüver N, Schirmer K, Tanneberger K, Tobor-Kapłon M, Witters H, Belanger S, Benfenati E, Creton S, Cronin MTD, Eggen RIL, Embry M, Ekman D, Gourmelon A, Halder M, Hardy B, Hartung T, Hubesch B, Jungmann D, Lampi MA, Lee L, Léonard M, Küster E, Lillicrap A, Luckenbach T, Murk AJ, Navas JM, Peijnenburg W, Repetto G, Salinas E, Schüürmann G, Spielmann H, Tollefsen KE, Walter-Rohde S, Whale G, Wheeler JR, Winter MJ (2013) A European perspective on alternatives to animal testing for environmental hazard identification and risk assessment. Regul Toxicol Pharmacol 67(3):506–530
4. CAS (2014) Chemical abstract services databases. http://www.casorg/content/cas-databases
5. van Leeuwen CJ (2007) General introduction. In: van Leeuwen CJ, Vermeire TG (eds) Risk assessment of chemicals. Springer, Dordrecht, p 686