Oláh, Judit, és József Popp. „Sustainable Liquid Biofuels (Bioethanol, Biodiesel) Production and Their Multifunctional Impacts”. Journal of Central European Green Innovation 10, no. 1 (augusztus 18, 2022): 3–20. Elérés december 5, 2025. https://journal.uni-mate.hu/index.php/jcegi/article/view/3276.