Subagja, Rudi, Ahmad Royani, and Puguh Prasetyo. 2012. “PENGARUH PENAMBAHAN NaOH, TEMPERATUR DAN WAKTU TERHADAP PEMBENTUKAN FASA NATRIUM TITANAT DAN NATRIUM FERIT PADA PROSES PEMANGGANGAN ILMENIT BANGKA[The Effect of Caustic Addition, Temperature and Reaction Time on The Phase Formation of Sodium Titanate and Sodium Ferrite During The Roasting of Bangka’s Ilmenite]”. Jurnal Metalurgi 27 (3):241-50. https://doi.org/10.14203/metalurgi.v27i3.234.