@article {330,
	title = {Gamertogenic activity in three internally fertilized prosobranchs from southern Africa, with notes on the egg capsules of <i>Burnupena lagenaria</i>},
	journal = {South African Journal of Zoology},
	volume = {23},
	year = {1988},
	pages = {128-133},
	author = {Lasiak, T. and van der Horst, G.}
}
