1. The effect of an adjuvant mistletoe treatment programme in resected head and neck cancer patients;Steuer-Vogt;Eur. J. Cancer,2001
2. How useful are unconventional cancer treatments?;Ernst;Eur. J. Cancer,1999
3. Warum benützen Tumorpatienten Alternativmedizin?;Morant;Schweiz med Wschr,1991
4. The Best Alternative Medicine;Pelletier,2000
5. Complementary/Alternative Medicine. An Evidence-based Approach;Spencer,1999