7FAO. Developing effective forest policy - A guide. FAO Forestry Paper 161. Rome.2010.
8Liu Jinlong. Forests in the Mist. Wageningen University and Research. Wageningen.2006.
9Liu J., Wang H., and Pang, M. Applying NFP to revising the 'Harvest Quota Code' in support of collective forest tenure reform in china: a case from Sanmin Prefecture. The International Forestry Review 2010, 12 (5): 426.