1. Rosolovskii, V.Ya., Khimiya bezvodnoi khlornoi kisloty (Chemistry of Anhydrous Perchloric Acid), Moscow, 1966.
2. Zinov’ev, A.A., Usp. Khim., 1963, vol. 32, no. 5, p. 613.
3. Kratkaya khimicheskaya entsiklopediya (Concise Encyclopedia of Chemistry), Moscow: Sovetskaya Entsiklopediya, 1967, vol. 5, p. 711.
4. Barrett, J., Inorganic Chemistry in Aqueous Solution, Cambridge: Royal Society of Chemistry, 2003, p. 52.
5. Hammett, L.P., Physical Organic Chemistry, New York: McGraw Hill, 1970.