@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.}
}
@article {berry1963growth,
	title = {Growth and variation of the shell in certain malayan limestone hill snails},
	journal = {Journal of Molluscan Studies},
	volume = {35},
	number = {5},
	year = {1964},
	pages = {203{\textendash}206},
	publisher = {Malacological Soc London},
	author = {Berry, AJ}
}
