1. Black Sea Red Data Book, Ed. by H.J. Dumont, Unit. Nat. Office Project Serv., New York, 1999.
2. Feldmann Index
3. Interpretation Manual of European Union Habitats, Europ. Commis., DG Environ., Brussels, 2007.
4. Kalugina A.A., Morskie podvodnye issledovanija, Nauka, Moscow, Pp. 105–113, 1969. [Rus.]
5. Lisovskaja O.A. and Stepan'jan O.V., Algologia, 14(4):341–348, 2009.