R. J.  Grayer, Eckert, M. R., Veitch, N. C., Kite, G. C., Marin, P. D., Kokubun, T., Simmonds, M. S. J., and Paton, A. J., ?The chemotaxonomic significance of two bioactive caffeic acid esters, nepetoidins A and B, in the Lamiaceae?, Phytochemistry, vol. 64, pp. 519?528, 2003.

S.  Duletiae-Lauseviae and Marin, P. D., ?Pericarp structure and myxocarpy in selected genera of Nepetoideae (Lamiaceae)?, Nord J Bot, vol. 19, pp. 435?446, 1999.

P. D.  Marin, Grayer, R. J., Veitch, N. C., Kite, G. C., and Harborne, J. B., ?Acacetin glycosides as taxonomic markers in Calamintha and Micromeria?, Phytochemistry, vol. 58, pp. 943?947, 2001.