NĘCKA, Krzysztof; SZUL, Tomasz. Assessment of Photovoltaic Systems in Public Utility Facilities in Light of the European Parliament Directive Requirements on Energy Efficiency. Regional Barometer. Analyses & Prognoses, [S. l.], v. 15, n. 1, p. 25–31, 2017. DOI: 10.56583/br.447. Disponível em: https://czaz.akademiazamojska.edu.pl/index.php/br/article/view/447. Acesso em: 10 apr. 2025.