1. On the effect of extremely diluted (“homeopathic”) solutions of metal salts on development and growth of tadpoles;König;Zschft Ges Exp Med,1927
2. Effects of highly diluted succussed thyroxine on metamorphosis of highland frogs;Endler;Berlin J Res Hom,1991
3. Climbing activity in frogs and the effect of highly diluted succussed thyroxine;Endler;Br Hom J,1991
4. Endler PC. Homeopathy research – an expedition report. An old healing system gains plausibility. edition@inter-uni.net, Graz 2003/Expedition Homoeopathieforschung. Ein altes Heilsystem wird plausibel. Maudrich, Wien, 1. A. 1998, 2. A. 2006.
5. Die Wirkung von “homöopathisch” zubereitetem Thyroxin auf die Metamorphose von Hochlandamphibien. Ergebnisse einer multizentrischen Kontrollstudie;Zausner;Perfusion,2002