1. Markets and Markets: “Surfactants Market by Product Types (Anionic, Non-Ionic, Cationic, Amphoteric), Substrates (Synthetic/Petrochemical, Bio-based/Natural/Green), Geography and Applications: Global Industry Trends and Forecasts to 2017”, 2013
2. Regulation (EC) No 648/2004 of the European Parliament and of the Council of 31 March on detergents
3. Water quality, Determination of surfactants, Part 1: Determination of anionic surfactants by the methylene blue spectrometric method, ISO 7875/1, International Organization for Standardization, Geneva, Switzerland 1984
4. Titration of Anionic Surfactants in a Mixture, Using a Surfactant Exthactive Electrode
5. Potentiometric Titrations Based on Ion-Pair Formation