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C.  Monniot, ?Ascidies Phlebobranches et Stolidobranches du sud de L?Ocean Indien?, Annales de L?Institut Oceanographique, nouvelle serie, vol. 54, pp. 171-224, 1978.

H. H.  Plough, Sea squirts of the Atlantic Continental Shelf from Maine to Texas. Baltimore: The Johns Hopkins University Press, 1978.