Горобець, В. Ф., and Т. О. Щербакова. “Cultivars of the Itoh Peony Group in the Collection of the M. M. Hryshko National Botanical Garden National Academy of Sciences of Ukraine”. Plant varieties studying and protection 16, no. 1 (April 12, 2020): 17–24. Accessed April 28, 2024. https://journal.sops.gov.ua/article/view/201015.