R. Eslami Farsani and  R. Fazaeli,  Applications of Carbon Fibers Produced from Polyacrylonitrile Fibers.   journal   = {International Journal of Structural and Construction Engineering}, [online]. World Academy of Science, Engineering and Technology.
    August 2012, vol. 68(8). 842 - 845
    [viewed 18 October 2021]. Available from: https://publications.waset.org/pdf/13726.