@article {401,
	title = {Ein neuer Fall von der Ausstossung der Eingeweide bei den Ascidien},
	journal = {Annotationes Zoologicae Japonensis},
	volume = {9},
	year = {1918},
	pages = {393-397},
	author = {Oka, A.}
}
@article {417,
	title = {Notizen uber japanische ascidien 1},
	journal = {Annotationes Zoologicae Japonensis},
	volume = {6},
	number = {1},
	year = {1906},
	pages = {37-52},
	author = {Oka, A.}
}
