1. Organon of medicine;Hahnemann,1970
2. Correspondence of organs, and direction of cure;Kent;Trans Soc Homœopathicians,1911
3. Hahnemann’s three rules concerning the rank of symptoms;Hering;Hahnemannian Monthly,1865
4. Vithoulkas G. Paragraphs 46 and 47. In: Vithoulkas G (ed) A New Model for Health and Disease. California: Health and Habitat, 1997, pp 150–151.
5. Chapter 15. The follow up interview; and Chapter 16: principles involved in long term management;Vithoulkas,2000