@article {1810,
	title = {Three sibling species species of didemnid ascidians from northern Norway:  Didemnum albidum (Verrill, 1871), Didemnum polare (Hartmeyer, 1903), and Didemnum romssae sp. nov.},
	journal = {Canadian Journal of Zoology},
	volume = {74},
	year = {1996},
	pages = {357-379},
	author = {Marks, J.A.}
}
@article {124,
	title = {Distaplia alaskensis sp. nov. (Ascidiacea, Aplousobranchia) and other new ascidian records from south-central Alaska, with a redescription of Ascidia columbiana (Huntsman, 1912)},
	journal = {Canadian Journal of Zoology},
	volume = {79},
	year = {2001},
	pages = {1766-1781},
	chapter = {1766},
	author = {Lambert, G. and Sanamyan, K.}
}
