Z. Jovanovic and  Z. Masonicic and  S. Dragutinovic and  Z. Sakota,  The Improvement of Environmental Protection through Motor Vehicle Noise Abatement.   journal   = {International Journal of Mechanical and Mechatronics Engineering}, [online]. World Academy of Science, Engineering and Technology.
    February 2016, vol. 112(4). 736 - 741
    [viewed 24 April 2024]. Available from: https://publications.waset.org/pdf/10004159.