Analisis kedudukan hukum panitia tender pada persekongkolan tender secara vertikal (studi kasus putusan KPPU perkara Nomor 04/KPPU-L/2013 = Analysis on the legal position of tender committee in vertically collusive tender (case study of verdict No 04/KPPU-L/2013 / Adifyan Rahmat Asga ([Fakultas Hukum Universitas Indonesia, Fakultas Hukum Universitas Indonesia], 2014)