Romijarso, Toni Bambang. 2013. “PERBANDINGAN KEKERASAN DAN KETAHANAN ABRASI PROSES PELAPISAN KROMISASI, BORONISASI DAN VANADISASI PADA BESI COR KELABU[Comparison of Hardness And Abrassion Resistant of Boronizing Vanadizing and Chromizing Coated Gray Cast Iron]”. Jurnal Metalurgi 28 (3):167-76. https://doi.org/10.14203/metalurgi.v28i3.260.