1. Haupt, D.E.: Soap/Cosmetics/Chemical Specialties 60, Sept., 42 (1984)
2. ibid. April, 31 (1984)
3. Haupt, D. E., Drinkard, G., Pierce, H. F.: J. Am. Oil Chem. Soc. 61, 276 (1984)
4. Donohue, J.: Soap/Cosmetics/Chemical Specialties 60, January, 27 (1984)
5. Solleveld, E.: J. Am. Oil Chem. Soc. 61, 348 (1984)