@article {572,
	title = {Pteropoda},
	journal = {Tiefsee Exp. 1898-1899},
	volume = {4},
	year = {1905},
	pages = {314},
	chapter = {1},
	author = {J. Meisenheimer}
}
@book {531,
	title = {Contributions to Pteropodernes},
	series = {Morphology of Systematic and for knowledge of their geographical distribution},
	volume = {4},
	year = {1886},
	pages = {1-231},
	publisher = {Spolia Atlantica-Vidensk},
	organization = {Spolia Atlantica-Vidensk},
	edition = {1},
	author = {J.E.V. Boas}
}
