Nguyen, T. T., Nguyen, H. V., & Nguyen, H. T. (2021). Research and Manufacturing of Oval Gear Pair Applied in Rotor of a Roots Type Compressor. JST: Engineering And Technology For Sustainable Development, 31(5), 31-38. https://doi.org/10.51316/jst.154.etsd.2021.31.5.5