1. Hartwell JL (1982) Plants used against cancer. Quaterman Publications, Lawrence
2. Lundgren G (1981) Opening address to the symposium. In: Levring T (ed) Xth international seaweed symposium. Walter de Gruyter, Berlin
3. Hoppe HA (1982) Marine algae: their products and constituents. In: Hoppe HA, Levring T (eds) Marine algae in pharmaceutical science. Walter de Gruyter, Berlin
4. Guven KC, Guvener B, Guler B (1990) Pharmacological activities of marine algae. In: Akatsuka I (ed) Introduction to applied phycology. SPB Academic Publishing, The Hague
5. Guven KC, Bora A, Sunam G (1969) About alkaloid content of marine algae. Hordenine from Phyllophora nervosa (D.C.) Grev. Eczacilik Bul XI(12):177–184