1. Schizophrenia History;Lehmann,1980
2. Charaka-Samhita: Translated by Kaviratna K A C; Part XL Calcutta, Sarma P, 1906. pp 1261–1279
3. Caraka Samhita: Translated by Shree Gulabkunverba Ayurvedic Society, Vol 5, Jamnagar, India, 1949, pp 607–618
4. World History of Psychiatry;Rao,1975
5. Ayurveda;Fleischman;Int J Soc Psychiatr,1976