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Yun-Yang, W.; Yu-Min, D.; Fang-Xing, Y.; Ying, X.; Rong-Zhi, C.; Kennedy, J. F. Purification and characterization of hydrosoluble components from the sap of Chinese lacquer tree Rhus vernicifera. International Journal of Biological Macromolecules. 2006, 38 (3–5): 232–40. PMID 16580725. doi:10.1016/j.ijbiomac.2006.02.019.