“Vibration Analysis to Detect Failure Bearing of Centrifugal Pump ‘Black Liquor Pump’ in PT. Riau Andalas Pulp & Paper (RAPP)”. Jurnal Teknik Mesin, vol. 11, no. 2, Oktober 2021, hlm. 146-52, https://doi.org/10.21063/jtm.2021.v11.i2.146-152.