@article {1793,
	title = {The ascidians of the Japan Sea. II},
	journal = {Publications of the Seto Marine Biological Laboratory},
	volume = {35},
	year = {1991},
	pages = {25-170},
	author = {Nishikawa, T.}
}
@article {1792,
	title = {Pycnoclavella taureanensis n. sp. (Ascidiacea) from the Mediterranean Sea},
	journal = {Vie Milieu},
	volume = {41},
	year = {1991},
	pages = {245-248},
	author = {Brunetti, R.}
}
@article {1703,
	title = {Decouverte d{\textquoteright}une nouvelle lignee evolutive chez les ascidies de grande profondeur:  une Ascidiidae carnivore},
	journal = {Comptes Rendus de Seances de l{\textquoteright}Academie des Sciences, series 3},
	volume = {312},
	year = {1991},
	pages = {383-388},
	author = {Monniot, C. and Monniot, F.}
}
@article {1689,
	title = {Ascidias litorales del Mediterraneo iberico. Faunistica, ecologia Y biogeografia},
	journal = {Publicaciones de la Universidad de Alicante, Alicante},
	year = {1991},
	pages = {1-405},
	author = {Ramos-Expla, A.}
}
