Ayyappan GS, Poonthalir R, Raja Raghavan M , Ramesh Babu B, Kota Srinivas. 2020. “Comprehensive Study On Induction Motor Condition Monitoring Techniques And Products – A Review”. International Journal of Advanced Science and Technology 29 (9s), 3623 -38. http://sersc.org/journals/index.php/IJAST/article/view/16364.