Nguyen, D. T., Khong, V. Q., Pham, H. T., & Nguyen, T. L. (2019). Research of Emission Reduction and Efficiency Improvement of Three Way Catalyst Equipped on Carburetor Motorcycles Using Air Injection on Exhaust Manifold. Old Journal, 137, 38-43. https://jst.vn/index.php/old/article/view/607