Bachir Chemani and  Rachid Halfaoui,  Theoretical Density Study of Winding Yarns on Spool.   journal   = {International Journal of Materials and Metallurgical Engineering}, [online]. World Academy of Science, Engineering and Technology.
    October 2014, vol. 94(10). 1162 - 1165
    [viewed 20 April 2024]. Available from: https://publications.waset.org/pdf/9999596.