Concept and System of Social Assistance Agreements. University Scientific Notes, [S. l.], v. 19, n. 1 (73), p. 137–155, 2020. DOI: 10.37491/UNZ.73.12. Disponível em: https://unz.univer.km.ua/index.php/unz/article/view/73_137-155. Acesso em: 15 feb. 2026.