JÍLKOVÁ, E. .; ŘÍHOVÁ, V. . Regression and correlation analysis of energy productivity indicators compared within selected countries of the EU. Zeszyty Naukowe UPH seria Administracja i Zarządzanie, [S. l.], v. 44, n. 117, p. 37–44, 2019. Disponível em: https://czasopisma.uph.edu.pl/znadministracja/article/view/410. Acesso em: 3 may. 2024.