Primary energy factors for different district heating networks: an Estonian exampleLatõšov, Eduard; Kurnitski, Jarek; Thalfeldt, Martin; Volkova, AnnaEnergy procedia2016 / p. 674-684 : ill https://doi.org/10.1016/j.egypro.2016.09.126 Conference Proceedings at Scopus Article at Scopus Article at WOS