1. Building Energy Research Center of Tsinghua University. The annual report of China building energy conservation development research, 2008 (in Chinese). Beijing: China Building Industry Press, 2008, 4
2. Liu J P, He Q, Yang L, et al. New style cave-dwelling on loess plateau (in Chinese). Architecture and Culture, 2007 (6): 39–41
3. Zhang Y P, Lin K P, Zhang Q L, et al. Ideal thermal physical properties for free-cooling (or heating) buildings with constant thermal physical property material. Energ Buildings, 2006 38(10): 1164–1170
4. Zhang Q L. Research on application and character of thermal performance of building envelope components with phase change material for thermal storage (in Chinese). PhD Dissertation. Beijing: Department of Building Science in Tsinghua University. 2007
5. Khudhair A M, Farid M M. A review on energy conservation in building applications with thermal storage by latent heat using phase change materials. Energ Convers Manage, 2004 45: 263–275