GRADZIUK, Piotr; GRADZIUK, Barbara. Economic and Ecological Efficiency of Solar Systems. A Case Study at the Gorzków and Rudnik Communes. Regional Barometer. Analyses & Prognoses, [S. l.], v. 14, n. 3, p. 189–195, 2016. DOI: 10.56583/br.506. Disponível em: https://czaz.akademiazamojska.edu.pl/index.php/br/article/view/506. Acesso em: 16 apr. 2025.