Árváné Ványi, Georgina, Zsolt Csapó, and László Kárpáti. “Externality Effects of Honey Production”. Applied Studies in Agribusiness and Commerce 6, no. 1-2 (June 30, 2012): 63–67. Accessed May 17, 2021. https://ojs.lib.unideb.hu/apstract/article/view/7779.