Malešević, Branko, and Dimitrije Jovanović. “Frame’s Types of Inequalities and Stratification”. CUBO, A Mathematical Journal 26, no. 1 (March 19, 2024): 1–19. Accessed May 17, 2024. https://www.perspectivasdelacomunicacion.cl/ojs/index.php/cubo/article/view/3625.