1. Newall CA, Anderson LA, Phillipson JD. Herbal Medicines: A Guide for Health-Care Professionals. London: The Pharmaceutical Press, 1996, 191-2.
2. Zeylstra H. Filipendila ulmaria. Br J Phytotherapy 1998;5:8-12.
3. Zeylstra H. Filipendila ulmaria. Br J Phytotherapy 1998;5:8-12.
4. Zeylstra H. Filipendila ulmaria. Br J Phytotherapy 1998;5:8-12.
5. Blumenthal M, Busse WR, Goldberg A, et al. (eds). The Complete German Commission E Monographs: Therapeutic Guide to Herbal Medicines. Austin: American Botanical Council and Boston: Integrative Medicine Communications, 1998, 169.