M. Amirjan,  The Effect of Geometrical Ratio and Nanoparticle Reinforcement on the Properties of Al-Based Nanocomposite Hollow Sphere Structures.   journal   = {International Journal of Materials and Metallurgical Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2015, vol. 105(9). 1105 - 1108
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/10002175.