Shestakov , Maxim A., Vladimir M. Smirnov, and Marina V. Danilina. “Methodological Approaches to Assessing the Differentiation of Indicators of the Functioning of the Social Service System”. Interacción y Perspectiva 11, no. 2 (December 20, 2021): 170-187. Accessed April 5, 2025. https://produccioncientificaluz.org./index.php/interaccion/article/view/37466.