@book {RicKor-CJE-2003,
	title = {シンデレラ. 幾何学のためのグラフィックス},
	year = {2003},
	publisher = {Springer-Verlag},
	organization = {Springer-Verlag},
	address = {Tokyo},
	keywords = {software},
	author = {Richter-Gebert, J{\"u}rgen and Kortenkamp, Ulrich H.}
}
