Wagner, H., and G. Ulrich-Merzenich. “Synergy Research: Approaching a New Generation of Phytopharmaceuticals”. Journal of Natural Remedies 9, no. 2 (June 1, 2009): 121–141. Accessed April 29, 2024. http://www.informaticsjournals.com/index.php/jnr/article/view/232.