1. F. L. Buchholz, A. T. Graham, Modern Superabsorbent Polymer Technology, Wiley-VCH Verlag, New York 1998.
2. Preparation and properties of a slow release NP compound fertilizer with superabsorbent and moisture preservation
3. European Market for Polymer Ingredients in Personal Care, Report B240-39, Frost and Sullivan, London 2004.
4. K. Roehm, DE 10244380 A1, 2004.
5. EP 1192858 A1, 2002.