S. Büechi

Combined Herbal Preparation for Topical Treatment of Herpes labialis

R. Saller, R. Meyrat, C. Schmidhauser, 2001, Complementary Medicine Research.

Open, multicenter study to evaluate the tolerability and efficacy of Echinaforce Forte tablets in athletes

A. Suter, R. Schoop, S. Büechi, 2006, Advances in therapy.

Open Trial to Assess Aspects of Safety and Efficacy of a Combined Herbal Cough Syrup with Ivy and Thyme

J. Melzer, M. Ramos, S. Büechi, 2005, Complementary Medicine Research.