I. D. Chkhikvishvili, G. I. Kharebava: Cichoric and Chlorogenic Acids in Plant Species from Georgia. In: Applied Biochemistry and Microbiology. 2001, 37, S. 188–191, doi:10.1023/a:1002888016985.
Lee J. (2010). Caffeic acid derivatives in dried Lamiaceae and Echinacea purpurea products. In: Journal of Functional Foods 2, 158–162. doi:10.1016/j.jff.2010.02.003, PDF.
J. Lee, C. F. Scagel (2009). Chicoric acid found in basil (Ocimum basilicum L.) leaves. In: Food Chemistry 115, 650–656. doi:10.1016/j.foodchem.2008.12.075.
J. Lee, C. F. Scagel: Chicoric acid: chemistry, distribution, and production. In: Frontiers in chemistry. Band 1, 2013, S. 40, doi:10.3389/fchem.2013.00040, PMID 24790967, PMC 3982519 (freier Volltext) (Review).
J. Lee, C. F. Scagel: Chicoric acid: chemistry, distribution, and production. In: Frontiers in chemistry. Band 1, 2013, S. 40, doi:10.3389/fchem.2013.00040, PMID 24790967, PMC 3982519 (freier Volltext) (Review).
pharmazeutische-zeitung.de
L. Kabelitz, H. Walch: Echinacea: das Beste ausgepreßt. In: Pharmazeutische Zeitung, 1998, 31, zuletzt abgerufen am 27. Mai 2016.
Lee J. (2010). Caffeic acid derivatives in dried Lamiaceae and Echinacea purpurea products. In: Journal of Functional Foods 2, 158–162. doi:10.1016/j.jff.2010.02.003, PDF.