Romijarso, Toni Bambang. “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, vol. 28, no. 3, Dec. 2013, pp. 167-76, doi:10.14203/metalurgi.v28i3.260.