1. Abächerli, A., Doppenberg, F. 1998. Method for preparing alkaline solutions containing aromatic polymers. International patent PCT/IB98/00512, WO9842912.
2. Solid state analysis of plant polymers by FTIR;Abott;J. Wood Chem. Technol,1988
3. Antioxidant properties of phenolic lignin model compounds;Barclay;J. Wood Chem. Technol,1997
4. New method for quantitative determination of uronic acids;Blumenkrantz;Anal. Biochem,1973
5. Characterisation of cell wall pectins by vibrational spectroscopy;Boeriu;Polish J. Food Nutr. Sci,1998