Interpretasi kronostratigrafi MSNZ-6 dan MSNZ-5 berdasarkan impedansi akustik pada lapangan Sphenolithus = MSNZ-6 and MSNZ-5 chronostratigraphy interpretation based on acoustic impedance at Sphenolithus field / Wildanto Putera Nusantara - Wildanto Putera Nusantara, author (2013)