The lack of reversibility during financial crisis and its identificationAndrii Bielinskyi, Serhii Hushko, Andriy Matviychuk, Oleksandr Serdyuk, Serhiy Semerikov and Vladimir SolovievSHS Web Conf., 107 (2021) 03002DOI: https://doi.org/10.1051/shsconf/202110703002
