8Pbm Widsten.Nordic Pulp and Paper Research Journal.2003 18(2):158—161.
9Li Youming,Emerging Technologies of Pulping & Papermaking,Proceedings of the International Symposium on Emerging Technologies of Pulping & Papermaking,2nd Guangzhou,China.Oct.9-11,2002,2002:760-764.
10Guan Xingiong,Emerging Technologies of Pulping & Papermaking,Proceedings of the International Symposium on Emerging Technologies of Pulping & Papermaking.2nd Guangzhou,China,Oct.9-11,2002,2002:741—746.