RETRACTED: Methodological approach to solving the problem of increasing energy efficiency in residential buildingsSvetlana Ovchinnikova, Ivan Konstantinov, Hussein Radwan, Alexey Martynyuk and Vladislav NikolenkoE3S Web Conf., 549 (2024) 05004DOI: https://doi.org/10.1051/e3sconf/202454905004