@book {RicH.K-CSIG-2001,
	title = {Cinderella {\textendash} {S}oftware interattivo di geometria},
	year = {2001},
	note = {Italian translation.},
	publisher = {Springer-Verlag},
	organization = {Springer-Verlag},
	address = {Mailand},
	keywords = {software},
	author = {Richter-Gebert, J{\"u}rgen and H.~Kortenkamp, Ulrich}
}
@article {RicH.K-CNU-2000,
	title = {Cinderella {\textendash} Nachmittagssoftware im Unterricht?},
	journal = {Rundgang},
	volume = {2},
	year = {2000},
	month = {jun},
	publisher = {Klett und Balmer},
	keywords = {lehrer},
	url = {http://www.cinderella.de/papers/rundgang0200.pdf},
	author = {Richter-Gebert, J{\"u}rgen and H.~Kortenkamp, Ulrich}
}
@book {RicH.K-IGC-2000,
	title = {Die interaktive {G}eometry-{S}oftware {C}inderella},
	year = {2000},
	note = {German translation},
	publisher = {Springer-Verlag},
	organization = {Springer-Verlag},
	address = {Heidelberg},
	keywords = {software},
	author = {Richter-Gebert, J{\"u}rgen and H.~Kortenkamp, Ulrich}
}
