@article {1482,
	title = {Note on the Genera Geothauma and Gyrostropha},
	journal = {The annals and magazine of natural history, including zoology, botany and geology},
	volume = {6},
	year = {1893},
	pages = {284-285},
	chapter = {284},
	url = {http://www.biodiversitylibrary.org/page/24344618$\#$page/332/mode/1up},
	author = {E.A. Smith}
}
@article {688,
	title = {Catalog der gegenw{\"a}rtig lebend bekannten Pneumonopomen},
	journal = {Nachrichtsblatt der Deutschen Malakozoologischen Gesellschaft},
	volume = {30},
	year = {1898},
	chapter = {134},
	url = {http://biodiversitylibrary.org/item/89671$\#$page/336/mode/1up},
	author = {W. Kobelt and O. von Moellendorff}
}
@book {689,
	title = {Cyclophoridae},
	series = {Das Tierreich},
	volume = {16},
	year = {1902},
	pages = {662},
	publisher = {R. Friedl{\"a}nder und Sohn},
	organization = {R. Friedl{\"a}nder und Sohn},
	address = {Berlin},
	url = {http://biodiversitylibrary.org/item/16047$\#$page/456/mode/1up},
	author = {W. Kobelt}
}
@book {bhl44320,
	title = {Catalogue syst{\'e}matique des mollusques (gastropodes prosobranches et polyplacophores). Tome XIII /},
	year = {1908},
	note = {http://www.biodiversitylibrary.org/bibliography/11777},
	pages = {586},
	publisher = {Leide :Brill,},
	organization = {Leide :Brill,},
	keywords = {Catalogs and collections|Mollusks|},
	url = {http://www.biodiversitylibrary.org/item/44320$\#$page/354/mode/1up},
	author = {Rijksmuseum van Natuurlijke Historie te Leiden. and Horst, R. and Schepman, M. M.}
}
@article {45,
	title = {The Malayan species of Opisthostoma (Gastropoda, Probranchia, Cyclophoridae), with a catalogue of all the species hitherto described},
	journal = {The Bulletin of the Raffles Museum},
	volume = {24},
	year = {1952},
	pages = {5-61},
	chapter = {5},
	url = {http://rmbr.nus.edu.sg/rbz/biblio/24/24brm005-062.pdf},
	author = {van Benthem-Jutting, W.S.S.}
}
