@article {913,
	title = {The living species of the genus Hydatina Schumacher, 1817, (Mollusca: Gastropoda: Opistobranchia: Hydatinidae) with the description of a new species},
	journal = {Vita Marina},
	volume = {43},
	year = {1995},
	pages = {29-38},
	keywords = {Marquesas, Recent},
	author = {R.P.A. Voskuil}
}
@article {915,
	title = {Notes on the history of the malacological collection of the Nationaal Natuurhistorisch Museum, Leiden, The Netherlands, 1. The rediscovery of type-material of Bulla albocincta Van der Hoeven, 1839},
	journal = {Basteria},
	volume = {57},
	year = {1993},
	pages = {111-114},
	author = {Bijl, A.N. van der and R.P.A. Voskuil}
}
