Heat pump system efficiency comparison of different renewable energy sources – A family house case study in Zagreb city area. Rudarsko-geološko-naftni zbornik, [S. l.], v. 33, n. 5, 2018. DOI: 10.17794/rgn.2018.5.2. Disponível em: https://ojs.srce.hr/index.php/rgn/article/view/7442. Acesso em: 19 aug. 2025.