1. Ministry of Land, Infrastructure, Transport and Tourism, 2011: Efforts to Adapt to Climate Change on Water Resources in Japan. In Water Resource of Japan digest version of 2011 edition. (available at http://www.mlit.go.jp/common/000160790.pdf) (in Japanese) (accessed on Feb. 20 2013).
2. Ministry of Land, Infrastructure, Transport and Tourism, 2012: A new roof and wall greening space has been created. In Results of roof and wall greening national survey construction in 2011. (available at http://www.mlit.go.jp/common/000226442.pdf) (in Japanese) (accessed on Feb. 20 2013).
3. Richard, G. A., Luis, S. P., Dirk, R., and Martin, S., 1998: Crop Evapotranspiration (guidelines for Computing Crop Water Requirements). In FAO IRRIGATION AND DRAINAGE PAPER No. 56, FAO, 300pp.
4. Suzuki, H., Kojima, T., Shimada, S., Nojima, Y., and Tashiro, Y., 2005: The trend and tasks of the technology development on the wall greening, Journal of Japan Society of Revegetation Technology, 31, 247-259.
5. Suzuki, H., Misaka, I. and Tashiro, Y., 2007: Evaluation of Transpiration Properties of wall Greening Using Evaporation Efficiency Rate as an Index, Landscape Research Japan, 70, 401-406.