Popa, V.-M., D. N. Raba, C. Moldovan, D. G. Dumbrava, és D. Moirădean. „Technical - Economic Evaluations Experimental Casuistry Studied at Core Walnut Oil”. Review on Agriculture and Rural Development, köt. 2, sz. 1, 2013. január, o. 402-6, https://analecta.hu/index.php/rard/article/view/13344.