TRØMBORG, E.; HAVSKJOLD, M.; BOLKESJØ, T. F.; KIRKERUD, J. G.; TVETEN, Åsa G. Flexible use of electricity in heat-only district heating plants. International Journal of Sustainable Energy Planning and Management, Aalborg, Denmark, v. 12, p. 29–46, 2017. DOI: 10.5278/ijsepm.2017.12.4. Disponível em: https://journals.aau.dk/index.php/sepm/article/view/1632. Acesso em: 14 aug. 2022.