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.

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.