Durga Prasad, G., B. Sundara Siva Rao, and B. Raghu Kumar. “Predictive Maintenance and Fault Diagnosis of Hydraulic Gear Coupling of a Boiler Feed Pump Unit”. Journal of Experimental Sciences, vol. 3, no. 9, Apr. 2013, https://updatepublishing.com/journal/index.php/jes/article/view/1980.