Redefinisi keputusan tata usaha negara berdasarkan pasal 87 undang-undang nomor 30 tahun 2014 dan implikasinya terhadap wewenang peradilan tata usaha negara = Redefinition of state administrative decision to article 87 of law number 30 year 2014 and its implication to the authority of state administrative judicature / Hevi Dwi Oktaviani