1. The kinetics of residual delignification and factors affecting the amount of residual lignin during kraft pulping;Lindgren;J. Pulp Pap. Sci.,1996
2. Structural changes in lignin during a totally chlorine free bleaching sequence. Part II: An NMR study;Gellerstedt;J. Pulp Pap. Sci.,1999
3. Possible condensation and polymerization reactions of lignin fragments during alkaline pulping processes;Gierer;Appl. Polym. Symp.,1976
4. Radiotracer experiments on lignin reactions. VI. The polymerization of lignin during pulping involving terminal hydroxymethyl group of phenylpropane side chain;Araki;Mokuzai Gakkaishi,1980
5. Quantitative 13C NMR analysis of kraft lignins;Gellerstedt;Acta Chem. Scand. B,1987