1. SELENE and the lunar farside, Science, 2009, Vol. 323
2. http://www.selene.jaxa.jp/en/index.html
3. http://www.jaxa.jp/about/2025/index_e.html
4. http://www.kantei.go.jp/jp/singi/utyuu/tukitansa/100730houkokusho.pdf (written in Japanese)
5. Heiken G., Vaniman D., French B., The lunar source-book, Cambridge University Press, Cambridge, 1991