1. Ardré, F., 1970. Contribution à l’étude des algues marines du Portugal. I. La flore. — Port. Acta Biol. (B)10 (1–4), 137–555.
2. Bliding, C., 1950. A preliminary report on some new Mediterranean green algae. — Bot. Notiser113, 172–184.
3. Bliding, C., 1968. A critical survey of European taxa in Ulvalves. Part. II.Ulva, Ulvaria, Monostroma, Kornmannia. — Bot. Notiser121, 535–629.
4. Christensen, T., Koch, D. & Thomsen, H.A., 1985. Distribution of algae in Danish salt and brackish waters. Institut for Sporeplanter, København, 64pp.
5. Correa, J.A., Nielsen, R. & Grund, D.W., 1988. Endophytic algae ofChondrus crispus (Rhodophyta). II.Acrochaete heterocladia sp. nov.,A. operculata sp. nov., andPhaeophila dendroides (Chlorophyta). — J. Phycol.24, 528–539.