00577naa#a2200181#i#450# EN\\bibl\121680 20260508205144.5 2782-4586 20260308b2026####ek#y0engy0150####ca RU Economic efficiency of experimental research in the reconstruction of historical buildings Journal article Moscow ITBO University 2026 6 с. Journal article local Petuhova Alina Aleksandrovna Yangel' Daller Aleksandrovich Gulyakin Dmitriy Vladimirovich zhpi.ru