Wagner, Hildebert & Ulrich-Merzenich, Gudrun. (2009). Synergy research: Approaching a new generation of phytopharmaceuticals. Phytomedicine : international journal of phytotherapy and phytopharmacology. 16. 97-110. 10.1016/j.phymed.2008.12.018. Vlot AHC,

Aniceto N, Menden MP, Ulrich-Merzenich G, Bender A. Applying synergy metrics to combination screening data: agreements, disagreements and pitfalls. Drug Discov Today. 2019 Dec;24(12):2286-2298. doi: 10.1016/j.drudis.2019.09.002. Epub 2019 Sep 10. PMID: 31518641.

Ulrich-Merzenich G, Zeitler H, Vetter H, Kraft K. Synergy research: vitamins and secondary plant components in the maintenance of the redox-homeostasis and in cell signaling. Phytomedicine. 2009 Jan;16(1):2-16. doi: 10.1016/j.phymed.2008.11.007. Epub 2008 Dec 31. PMID: 19118991.

Zeitler H, Ulrich-Merzenich G, Hess L, Konsek E, Unkrig C, Walger P, Vetter H, Brackmann HH. Treatment of acquired hemophilia by the Bonn-Malmo Protocol: documentation of an in vivo immunomodulating concept. Blood. 2005 Mar 15;105(6):2287-93. doi: 10.1182/blood-2004-05-1811. Epub 2004 Nov 12. PMID: 15542586.