6Kim Y S, Kurahashi A, Meshituska G. Characteristics of the chemical struehure of ilgnin in fast-growing poplar (Populus maximowiczii Hznry).Mokuzai Gakkaishi. 1996,42(8) :782.
7Kim Y S, et al. Structural feature of lignin in cell-walls of normal and fast growing poplar(populus-maximowiczii hznry)-- linkage types of all-bound hydroxybenzoic and hydroxycinnamic acids. Mokuzai Gakkaishi. 1995,41(9) : 837.
8Sun R C, Fang J M, Mott L, et al. Fractional isolation and characterization of polysaceharides from oil palm trunk and empty fruit bunch fibres.Holzforschung. 1999,53 : 253.
9Pan X J, Sano Y, Ito T. Atmospheric acetic acid pulping of rice straw-II: Behavior of ash and silica in rice straw during atmospheric acetic acid pulping and bleaching. Holzforschung 1999,53:49.
10Sun R C, Tomkinson T. Encyclopedia of Separation Science: In Wilson I D, Adlatd T R,Poole C F, et al. Eds Academic Press. London. 2000, 6:4568.
