WASET
    J. Ramos and  V. Gil and  A. F. Torres,  Wear and Mechanical Properties of Nodular Iron Modified with Copper.   journal   = {International Journal of Materials and Metallurgical Engineering}, [online]. World Academy of Science, Engineering and Technology.
    February 2015, vol. 99(3). 447 - 450
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/10000778.