@inbook {293,
	title = {Holosome Ascidien (Ascidiacea Holosomata)},
	booktitle = {Meerfauna},
	year = {1901},
	pages = {19-63},
	chapter = {1},
	address = {Bergen},
	author = {Hartmeyer, R.}
}
@article {136,
	title = {Papers from the Harriman Alaska Expedition. XXIII. The Ascidians},
	journal = {Proceedings of the Washington Academy of Sciences},
	volume = {3},
	year = {1901},
	pages = {225-266},
	chapter = {225},
	author = {Ritter, W.E.}
}
