SORKNÆS, P.; LUND, H.; ANDERSEN, A. N.; RITTER, P. Small-scale combined heat and power as a balancing reserve for wind – The case of participation in the German secondary control reserve. International Journal of Sustainable Energy Planning and Management, Aalborg, Denmark, v. 4, p. 31–42, 2015. DOI: 10.5278/ijsepm.2014.4.4. Disponível em: https://journals.aau.dk/index.php/sepm/article/view/927. Acesso em: 2 may. 2024.