OCTA ARIYANTIKA, Ara; R MAWARDI, Didiek; DWIONO, Sugeng. Implementation of Article 9 of Law No. 5/1999 on the prohibition of monopolistic practices and unfair competition. J-CEKI : Jurnal Cendekia Ilmiah, [S. l.], v. 4, n. 3, p. 2568–2580, 2025. DOI: 10.56799/jceki.v4i3.8295. Disponível em: https://al-haramjournal.id/J-CEKI/article/view/8295. Acesso em: 26 jul. 2026.