Hunyadi, Gergely, Györgyi Bíró, and János Tamás. “Applicability of Reflectance to Determine Compost Maturity”. Acta Agraria Debreceniensis, no. 46 (May 16, 2012): 31–35. Accessed October 16, 2021. https://ojs.lib.unideb.hu/actaagrar/article/view/2403.