WASET
    Anil Kumar,  Isospectral Hulthén Potential.   journal   = {International Journal of Nuclear and Quantum Engineering}, [online]. World Academy of Science, Engineering and Technology.
    February 2014, vol. 86(2). 419 - 422
    [viewed 23 April 2024]. Available from: https://publications.waset.org/pdf/9997757.