NAJMAN, R. Nonlinear Aspects of Heat Pump Utilization. Acta Polytechnica, [S. l.], v. 50, n. 4, 2010. DOI: 10.14311/1237. Disponível em: https://ojst.is.cvut.cz/ojs/index.php/ap/article/view/1237.. Acesso em: 19 apr. 2025.