1. 1. Zasowska-Nowak A, Nowak D. Leki mukoaktywne. Alergoprofil. 2010;6(1):7-13.
2. 2. Lutsenko Yu, Bylka W, Matławska I, Darmohray R. Hedera helix as a medicinal plant. 2010, Vol. 56 No. 1,83-96
3. 3. European Union herbal monograph on Hedera helix L., folium EMA/ HMPC/325716/2017
4. 4. Balbot Yu, Prokhorov E, Mokia S, Yurtseva A. Comparing the efficacy and safety of high-concentrate (5-7,5;1) ivy leaves extract and Acetylcysteine for treatment of children with acute bronchitis. Drugs Ukr. 2004;11:1-4.
5. 5. ESCOP Monographs. European Scientific Cooperative On Phytotherapy. Hederae helices folium. 2nd edn. 2003:241-247.