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SarĂ , M. (1987). A study on the genus Tethya (Porifera, Demospongiae) and new perspectives in sponge systematics. In: Vacelet J, Boury-Esnault N (eds) Taxonomy of Porifera from the N.E. Atlantic and the Mediterranean Sea. NATO Advanced Science Institutes Series G, Ecological Sciences, Springer, Heidelberg. 13, 205-225.