1. Plant Resources of the USSR: Flowering Plants, Their Chemical Composition and Use. Family Asteraceae (Compositae) [in Russian], Vol. 7, Nauka, St. Petersburg, 1993, p. 120.
2. M. D. Mashkovskii, Drugs [in Russian], Vol. 1, Meditsina, Moscow, 1984, p. 513.
3. A. Rancic, M. Sokovic, J. Vukojevic, A. Simic, P. Marin, S. Duletic-Lausevic, and D. Djokovic, J. Essent. Oil Res., 17, No. 3, 341 (2005).
4. U. Oezgen, A. Mavi, Z. Terzi, M. Coskun, and A. Yildirim, Turkish J. Pharmaceut. Sci., 1, No. 3, 203 (2004).
5. B. Tepe, M. Sokmen, A. H. Askin, and A. Sokmen, Food Chem., 90, No. 4, 685 (2004).