Analisis Dugaan Pelanggaran Pasal 12 Undang-Undang Nomor 5 Tahun 1999 tentang Larangan Praktik Monopoli dan Persaingan Usaha Tidak Sehat terhadap Pembentukan Holding Company oleh Badan Usaha Milik Negara (BUMN) pada Sektor Perumahan dan Pengembangan Kawasan = Analysis of Alleged Violation of Article 12 of Law Number 5 Year 1999 concerning Prohibition of Monopolistic Practices and Unfair Business Competition in the Establishment of Holding Company by State-Owned Enterprise in the Housing and Area Development Sector