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Wang, R., Chen, C. L., & Gratzl, J. S. (2005). Dechlorination of chlorophenols found in pulp bleach plant E-1 effluents by advanced oxidation processes. BIORESOURCE TECHNOLOGY, 96(8), 897–906. https://doi.org/10.1016/j.biortech.2004.08.011

Wang, R., Chen, C. L., & Gratzl, J. S. (2004). Ozonation of pine kraft lignin in alkaline solution. Part 1: Ozonation, characterization of kraft lignin and its ozonated preparations. HOLZFORSCHUNG, 58(6), 622–630. https://doi.org/10.1515/HF.2004.116

Wang, R., Chen, C. L., & Gratzl, J. S. (2004). Ozonation of pine kraft lignin in alkaline solution. Part 2: Surface active properties of the ozonated kraft lignins. HOLZFORSCHUNG, 58(6), 631–639. https://doi.org/10.1515/HF.2004.117