Tóth, Marián, Vladislav Matveev, and Andrea Boháčiková. “Risk of Agricultural Production in Russian Orel Region”. Potravinarstvo Slovak Journal of Food Sciences 10, no. 1 (November 17, 2016): 557–562. Accessed July 22, 2024. http://potravinarstvo.com/journal1/index.php/potravinarstvo/article/view/664.