Template:Papanicolaou & Kokkini, 1982
- Papanicolaou, K. & Kokkini, S. 1982. A taxonomic revision of Sideritis L. sect. Empedoclia (Rafin.) Bentham (Labiatae) in Greece. pp. 101–128. in: Margaris, N.S., Koedam, A. & Vokou, D. (eds): Aromatic plants: Basic and applied aspects. Proceedings of an International Symposium on Aromatic Plants organized by the Laboratory of Ecology, University of Thessaloniki, held in Kallithea (Chalkidiki) Greece, 14-19 September 1981. Nijhoff, The Hague. ISBN 90-247-2720-0