@article {1705,
	title = {Ueber Clavelina coerulea n. sp., die erst von Japan bekannt gewordene Clavellina},
	journal = {Proceedings of the Imperial Academy of Japan},
	volume = {10},
	year = {1934},
	pages = {365-366},
	author = {Oka, A.}
}
@article {1704,
	title = {Ueber Clavelina coerulea n. sp., die erst von Japan bekannt gewordene Clavellina},
	journal = {Proceedings of the Imperial Academy of Japan},
	volume = {10},
	year = {1934},
	pages = {365-366},
	author = {Oka, A.}
}
@article {1671,
	title = {Eine zweite japanische Art der Gattung Agnesia},
	journal = {Proceedings of the Imperial Academy of Japan},
	volume = {5},
	year = {1929},
	pages = {152-154},
	author = {Oka, A.}
}
@article {1670,
	title = {Ueber eine neue stachelige Cynthia-Art aus Sagami Bucht},
	journal = {Proceedings of the Imperial Academy of Japan},
	volume = {8},
	year = {1932},
	pages = {131-134},
	author = {Oka, A.}
}
@article {1664,
	title = {Ueber eine merkwurdige Botryllus-Art, B. primigenus nov. sp.},
	journal = {Proceedings of the Imperial Academy of Japan},
	volume = {4},
	year = {1928},
	pages = {303-305},
	author = {Oka, A.}
}
