Sedlák, É., Borsodi, L., Boldizsár, E., Preininger, É., László, M., Szőke, É., & Gyurján, I. (2008). Bioactive phenols in leaves of Forsythia species. International Journal of Horticultural Science, 14(3), 57-59. https://doi.org/10.31421/IJHS/14/3/804