S. D. El Wakil and  M. Pladsen,  Minimizing the Drilling-Induced Damage in Fiber Reinforced Polymeric Composites.   journal   = {International Journal of Materials and Metallurgical Engineering}, [online]. World Academy of Science, Engineering and Technology.
    October 2017, vol. 132(12). 804 - 807
    [viewed 06 December 2019]. Available from: https://publications.waset.org/pdf/10008258.