Tinjauan yuridis terhadap substantive test in merger review pada merger vertikal dalam perspektif hukum persaingan usaha : studi kasus merger PT. Chandra Asri dan PT. Tri Polyta Indonesia Tbk. = Juridicial analysis the implication of substantive test in merger review on vertical merger according to anti-trust law perspective : case study merger PT. Chandra Asri dan PT. Tri Polyta Indonesia Tbk.