@article {118,
	title = {Beitrage zur Anatomie und Histologie des Sipunculus nudus L},
	journal = {Zeitschrift fur wissenschaftliche zoologie},
	volume = {36},
	year = {1882},
	pages = {201-255},
	author = {Andreae, J.}
}
@article {349,
	title = {Die Gephyrea gesammelt wahrend der zwei ersten Fahrten des William Barents. ii. Priapulida and Sipunculida},
	journal = {Niederlandisches Archiv fur Zoologie},
	volume = {1},
	number = {4},
	year = {1882},
	pages = {13-40},
	author = {Horst, R.}
}
