1. Bassett, T. W., Tate, S., & Maunder, M. (2014). Study of high frequency noise from electric machines in hybrid and electric vehicles. In INTER-NOISE and NOISE-CON Congress and Conference Proceedings (Vol. 249, No. 4, pp. 3909–3918). Institute of Noise Control Engineering.
2. Figlus, T., & Wilk, A. (2012). Comparison of the sound pressure measurement and the speed measurement of the gearbox vibrating surface. Transport Problems, 7, 37–42.
3. Hong, J. H., Hong, E. T., Lee, S. H., Ahn, Y. J., Chung, Y. W., Choi, S. H. (2016). Research on realization of energy IOT of agricultural machinery. Sejong: Economic Policy Division, Economic and Industrial Bureau.
4. Kim, Y. J., Kim, W. S., Chung, S. O., & Lee, D. H. (2014). Analysis of technical trend of electric agricultural field machinery. Agribusiness and information management, 6(2), 40–48.
5. Liang, M., Hu, J., Li, S., & Chen, Z. (2018). Topology optimization of transmission gearbox under multiple working loads. Advances in Mechanical Engineering, 10(11), 1687814018813454. https://doi.org/10.1177/1687814018813454