WASET
    B. Rezaei and  G. R. Boroun and  M. Abdolmaleki,  An Approximation Method for Three Quark Systems in the Hyper-Spherical Approach.   journal   = {International Journal of Physical and Mathematical Sciences}, [online]. World Academy of Science, Engineering and Technology.
    October 2013, vol. 76(4). 711 - 715
    [viewed 27 April 2024]. Available from: https://publications.waset.org/pdf/17420.