Sauer, Ursula G. “[The Use of Transgenic Animals in Biomedical Research in Germany: Perspectives to Change Biomedical Research to Nonanimal Test Methods] [Article in German]”. ALTEX - Alternatives to Animal Experimentation, vol. 23, no. 1, Feb. 2006, pp. 3-16, https://altex.org/index.php/altex/article/view/852.