Novikova, O. , Khandii, O. , Shamileva, L. , Semenenko, I. and Burko, I. 2021. Loss Assessment of Qualitative and Quantitative Composition of The Middle Class in Terms of Sustainable and Digital Development. European Journal of Sustainable Development. 10, 3 (Oct. 2021), 180. DOI:https://doi.org/10.14207/ejsd.2021.v10n3p180.