Kretlow, A., Butzke, D., Götz, M. E., Grune, B., Halder, M., Henkler, F., … Luch, A. (2010). Implementation and enforcement of the 3Rs principle in the field of transgenic animals used for scientific purposes. Report and recommendations of the BfR expert workshop, May 18-20, 2009, Berlin, Germany. ALTEX - Alternatives to Animal Experimentation, 27(2), 117–134. https://doi.org/10.14573/altex.2010.2.117