1. Randomised, placebo controlled trials of classical homoeopathy: Is there a problem;Van Haselen;Br Homoeopathy J,1998
2. Reasonable consensus, self-criticism, and the grounds of debate: a case from homoeopathy;Sharma,1998
3. The Two faces of homoeopathy;Campbell,1984
4. Homoeopathy in America: the rise and fall of a medical heresy;Kaufman,1971