1. Baslow, M. H.: Porifera. In: Marine pharmacology, a study of toxins and other biologically active substances of marine origin, pp 86?93. Ed. by E. Robert. Huntington, New York: Krieger Publishing Co. 1977
2. Bergquist, P. R. and J. J. Bedford: The incidence of antibacterial activity in marine Demonspongiae; systematic and geographic considerations. Mar. Biol. 46, 215?221 (1978)
3. Burkholder, P. R. and K. Ruetzler: Antimicrobial activity of some marine sponges. Nature, Lond. 222, 983?984 (1969)
4. Capelle, N., J. C. Braekman, D.Daloze and B. Tursch: Three new spongian diterpenes from Spongia officinalis, Presented at the Third International Symposium on Marine Natural Products, September 16?19, 1980. Sponsored by the International Union of Pure and Applied Chemistry, under the auspices of the University of Brussels (1980). (Unpublished)
5. Carter, G. T. and K. L. Rinehart, Jr.: Acarnidines, novel antiviral and antimicrobial compounds from the sponge Acarnus erithacus (de Laubenfels). J. Am. chem. Soc. 100, 4302?4304 (1978)