1. Myers D. Surfactant science and technology. 3rd ed. Hoboken: Wiley; 2006.
2. Warhurst MA (1995) An environmental assessment of alkylphenol ethoxylates and alkylphenols. Friends of The Earth, London.
3. US Environmental Protection Agency Nonylphenol (NP) and Nonylphenol Ethoxylates (NPEs) Action Plan [RIN 2070-ZA09] (2010).
4. Anderson DJ (1966) Methyl-beta-hydroxydodecyl sulfoxide containing detergent compositions. U.S. Patent 3,290,254.
5. Crawford RJW (1983) Alpha-sulfoxide and alpha-sulfone carboxyl compounds. U.S. Patent 4,395,363.