Gradziuk, Piotr, and Barbara Gradziuk. “Economic and Ecological Efficiency of Solar Systems. A Case Study at the Gorzków and Rudnik Communes”. Regional Barometer. Analyses & Prognoses 14, no. 3 (November 22, 2016): 189–195. Accessed November 8, 2024. https://czaz.akademiazamojska.edu.pl/index.php/br/article/view/506.