1. Graedel, T.E. 1998. Streamlined Life-Cycle Assessment. Prentice Hall.
2. Graedel, T.E. and B.R. Allenby. 1995. Industrial Ecology. Prentice Hall.
3. Hanaki, K., T. Matsuo, and T. Ito. 1997. Lowering the environmental impact of urban infrastructures: A research study. J. Urban Technology 4,2: 41–52.
4. Itokawa, H., K. Hanaki and T. Matsuo (in press): Nitrous oxide production in high-loading biological nitrogen removal process under low COD/N ratio condition. Water Research.
5. Kanagawa, T. E. Kato and H. Imura. 1992. Application of the Input-outout model to the analysis of urban energy consumption. Environmental Systems Research, Japan Society of Civil Engineers. 20:242–251 (in Japanese).