The role of energy-efficient renovation in the sustainability of cities and settlements: European experienceAlexey Budakov, Natalia Safronova, Alexander Alexandrovich Nikolaev, Le Quyen Vu and Yuliya A. LaamartiE3S Web Conf., 457 (2023) 02005DOI: https://doi.org/10.1051/e3sconf/202345702005