Kamonkhantithorn, C., and E. Anusurain. “Vibration analysis in case of bearing motor defected by piezoelectric sensor”. Rattanakosin Journal of Science and Technology, vol. 4, no. 1, Apr. 2022, pp. 54-62, https://ph02.tci-thaijo.org/index.php/RJST/article/view/245821.