1. Mattei CC. Electro-Homoeopathic medicine - A new medical system. Translated by Theobald RM. Second Edition, London: David Scott; 1891. p. 1, 2, 5, 6, 7.
2. Glidden AJL. Stepping stones to Electro Homoeopathy, (Count Mattei’s System of Medicine), Second Edition- Considerably Enlarged, London: Central Mattei Depoy; 1892. p. 8, 9, 10, 14, 23, 33.
3. Mattei CC. Electro-Homoeopathy: The Principles Of New Science Discovered By Count Caesar Mattei, Of Bologna (1880). Second English Edition, Bologna, Printing Office Mareggiani; 1880. p. 15.
4. Mattei CC. The principles of Electro Homoeopathy, a new science, reprint edition, New Delhi: B Jain Publishers (P) Ltd; 2002. p. 16-27.
5. Gliddon AJL. Stepping stones to Electro Homoeopathy, Sixth Edition (Revised), Reprint Edition, New Delhi: Jain Publishers (P) Ltd; 2002. p. 5-6.