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Pisera, A.; Lévi, C. (2002). 'Lithistid' Demospongiae. Pp. 299-301. In: Hooper, J.N.A. & Van Soest, R.W.M. (ed.) Systema Porifera. A guide to the classification of sponges. 1 (Kluwer Academic/ Plenum Publishers: New York, Boston, Dordrecht, London, Moscow). ISBN 0-306-47260-0 (printed version).