Pellegrini, M., A. Bianchini, A. Guzzini, and C. Saccani. “Classification through Analytic Hierarchy Process of the Barriers in the Revamping of Traditional District Heating Networks into Low Temperature District Heating: An Italian Case Study”. International Journal of Sustainable Energy Planning and Management, vol. 20, Feb. 2019, doi:10.5278/ijsepm.2019.20.5.