1. Davis, P.H, 1982, Flora of Turkey and the East Aegean Islands, Vol. 7, Edinburgh University Press, Edinburgh.
2. Davis, P.H., 1988, Flora of Turkey and the East Aegean Islands, Vol. 10, Edinburgh University Press, Edinburgh.
3. Tahtajan, A., 1987, Systemea Magnoliophytorum, Leningrad, Nauka.
4. Tamura, M., 1993, Ranunculaceae, In The Families and Genera of Vascular Plants (Kubitzki, K.,ed.), Vol.2, Springer, Berlin.
5. Jensen, U., Hoot, S.B., Johannsen, J.T., Kosuge, K., 1995, Pl Syst. Evol. Suppl., 9, 273–80.