@article {572,
	title = {Pteropoda},
	journal = {Tiefsee Exp. 1898-1899},
	volume = {4},
	year = {1905},
	pages = {314},
	chapter = {1},
	author = {J. Meisenheimer}
}
@article {541,
	title = {Vorl{\"a}ufige Mitteilung {\"u}ber die Thecosomata und Gymnosomata der Siboga-Expedition},
	journal = {Tijdsch. Nederl. Dierk.},
	volume = {2},
	year = {1903},
	pages = {117},
	chapter = {111},
	author = {J.J. Tesch}
}
