Reitner 1991. Phylogenetic aspects and new descriptions of spicule-bearing hadromerid sponges with a secondary calcareous skeleton (Tetractinomorpha, Demospongiae). Reitner, J.; Keupp, H.[Eds]. Fossil and Recent sponges., Springer-Verlag, Berlin, Heidelberg & New York, 1991: i-xviii, 1-595. Chapter pagination: 179-211