TKACH, Oleh. ІNSTITUTE OF PRESIDENCY AS A CONCEPTUAL POWER IN DEMOCRATIC POLITICAL SYSTEMS. SOPHIA. Human and Religious Studies Bulletin, [S. l.], v. 13, n. 1, p. 71–76, 2019. DOI: 10.17721/sophia.2019.13.17. Disponível em: https://sophia.knu.ua/index.php/sophia/article/view/58. Acesso em: 23 jul. 2026.