1. State Council. State Council's Suggestions on the Sustainable Development of Resource-dependent Cities. Document of State Council, 2007, No. 38; Dec 18th 2007.
2. Song Xiaowu, To Promote the Transformation and Development of Resource-dependent Cities by Developing Tourism--Speech on the Summit of T o Promote the Development of Northeastern China's Resource-dependent Cities. Information Center of National Tourism Administration of the People's Republic of China; Sep.6th 2007.
3. Li Yutong. On the Industry Conversion of Resource-based Cities in China. Changchun, Ph.D. Thesis of Jilin University;2007.