Homoki, Judit, Gyöngyi Gyémánt, and Judit Remenyik. “New Wonder of an Old Hormone: Hungarian Sour Cherry Varieties As Natural Melatonin Sources”. Acta Agraria Debreceniensis, no. 63 (February 17, 2015): 65–72. Accessed August 8, 2022. https://ojs.lib.unideb.hu/actaagrar/article/view/1836.