NASUTION, Ella Septri Armila; ISTISLAM, Istislam; PUSPITAWATI, Dhiana; SUSMAYANTI, Riana. THE FULFILLMENT OF THE PRINCIPLES OF LEGAL CERTAINTY AND JUSTICE IN THE REGULATION OF THE DUAL AUTHORITY OF THE MAYOR AS EX-OFFICIO IN THE BATAM CITY. International Journal of Innovative Technologies in Economy, [S. l.], n. 2(54), 2026. DOI: 10.31435/ijite.2(54).2026.4816. Disponível em: https://rspublisher.org/index.php/ijite/article/view/4816. Acesso em: 11 oct. 2026.