Novikova O, Khandii O, Shamileva L, Semenenko I, Burko I. Loss Assessment of Qualitative and Quantitative Composition of The Middle Class in Terms of Sustainable and Digital Development. EJSD [Internet]. 2021Oct.1 [cited 2024Nov.25];10(3):180. Available from: https://ojs.ecsdev.org/index.php/ejsd/article/view/1244