Nguyen TT, Nguyen HV, Nguyen HT. Research and Manufacturing of Oval Gear Pair Applied in Rotor of a Roots Type Compressor. ETSD [Internet]. 2021 Nov. 15 [cited 2025 Jul. 1];31(5):31-8. Available from: https://jst.vn/index.php/etsd/article/view/262