Kotrla, Marián, Kristína Mandalová, and Martin Prčík. “Regional Disparities in Slovakia and The Czech Republic in the Context of Sustainable Growing of Energy Plants”. European Journal of Sustainable Development 6, no. 2 (June 1, 2017): 165. Accessed April 19, 2025. http://ojs.ecsdev.org/index.php/ejsd/article/view/476.