Improving of the heat supply energy efficiency in Russian cities through the individual heat points introductionN. D. Chichirova, I. G. Akhmetova, K. V. Lapin, A. R. Gilmanova and ION IonE3S Web Conf., 124 (2019) 04009DOI: https://doi.org/10.1051/e3sconf/201912404009