BogdanovichN. I., Investigation of interaction of hydrolytic lignin in solid phase with gaseous sulphuric anhydride. Khimiya Drevesiny, No. 4, 1981, pp. 98–102.
2.
ReznikovV. M. and LisovaV. S., Sulphation of model compounds of lignin with pyridine sulphotrioxide. Khimiya Drevesiny, No. 4, 1975, pp. 70–74.
3.
PetropavlovskiiG. A., Hydrophilic partially substituted esters of cellulose and their modifi cation by chemical crosslinking. Nauka, Leningrad, 1988, 298 pp.
4.
PetropavlovskiiG. A. and KrunchakM. M., ZhPKh, 39, No. 1, 1966, p. 170.
5.
KlimovaV. A., Main micromethods for analysis of organic compounds. 2nd edition. Moscow, 1975, 224 pp.
6.
LisovaV. S. and ReznikovV. M., Nature of sulphur in sulphation products of dioxane lignin by “neutral” pyridine sulphotrioxide. Khimiya Drevesiny, No. 2, 1980, pp. 64–67.
7.
ErinsP., J. Gravitis wood as a multicomponent, crosslinked polymer system. Appl. Polym. Sci., No. 26, 1976, pp. 1117–1138.
8.
TsiniteV. A., Effect of oxidative and alkaline degradation of ligno-hydrocarbon matrix of cell walls on properties of spruce wood. Khimiya Drevesiny, No. 4, 1976, pp. 17–23.