E. {\'?lio Lanna, Rossi, A. Linhares, Cavalcanti, F. F., Hajdu, E., and Klautau, M., ?Calcareous sponges from São Paulo State, Brazil (Porifera: Calcarea: Calcinea) with the description of two new species?, Journal of the Marine Biological Association of the UK, vol. 87, 2007.