@article {Semper1872,
	title = {{\"U}ber Generationswechsel bei Steinkorallen und {\"u}ber das M. Edwards{\textquoteright}sche Wachsthumsgesetz der Polypen},
	journal = {Zeitschrift f{\"u}r Wissenschaftliche Zoologie},
	volume = {22},
	number = {2},
	year = {1872},
	pages = {235{\textendash}280},
	keywords = {SDC, TIP},
	url = {http://books.google.com/books?id=HcEEAAAAQAAJ},
	author = {Semper, C}
}
@article {Ortmann1890,
	title = {Die morphologie des skelettes der Steinkorallen in Beziehung zur koloniebildung.},
	journal = {Zeitschrift f{\"u}r wissenschaftliche Zoologie},
	volume = {50},
	year = {1890},
	pages = {278{\textendash}316},
	keywords = {RCBS, TIP},
	url = {http://sdrv.ms/TcePi8},
	author = {Ortmann, A}
}
