@article {Okutani2000,
	title = {{Gastropod fauna of a thermal vent site on the North Knoll of Iheya Ridge, Okinawa Trough}},
	journal = {Venus the Japanese Journal of Malacology},
	volume = {59},
	number = {2},
	year = {2000},
	pages = {123{\textendash}128},
	issn = {0042-3580},
	author = {Okutani, T and Fujiwara, Y}
}
@article {Okutani1990,
	title = {{Two new species of Provanna (Gastropoda: Cerithiacea) from snail pit in the hydrothermal vent site at the Mariana Back-Arc Basin}},
	journal = {Venus the Japanese Journal of Malacology},
	volume = {49},
	number = {1},
	year = {1990},
	pages = {19{\textendash}24},
	keywords = {HOV Alvin (Human Occupied Vehicle)},
	issn = {0042-3580},
	author = {Okutani, T}
}
@article {Okutani1988,
	title = {{Mariana haiko no nessui funshutsuko ni sumu fukusokurui no ichi shinshu. A new gastropod mollusk associated with hydrothermal vents in the Mariana Back-Arc Basin, western Pacific}},
	journal = {Venus the Japanese Journal of Malacology},
	volume = {47},
	number = {1},
	year = {1988},
	pages = {1{\textendash}9},
	issn = {0042-3580},
	author = {Okutani, T and Ohta, S}
}
