Kassai, Mária Katalin, et al. “Effect of Carbon Sequestration of Wheat (Triticum Aestivum L) Varieties on Soil Organic Matter ”. GEORGIKON FOR AGRICULTURE, vol. 20, no. 1, Mar. 2016, pp. 20-26, https://journal.uni-mate.hu/index.php/gfa/article/view/7002.