Assessing building energy efficiency with the help of specific heat demand characteristics: boreal regions of Russia case studyLyazzat Junussova, Andrey Zhuikov, Anatoly Matiushenko, Stanislav Chicherin and Anna IlichevaE3S Web Conf., 208 (2020) 02011DOI: https://doi.org/10.1051/e3sconf/202020802011