WASET
    Atikur Rahman Baizid and  Md. Elias Uddin Biswas and  Ahsan Habib,  Gravitational and Centrifugal Forces in the Nut-Kerr-Newman Space-Time.   journal   = {International Journal of Physical and Mathematical Sciences}, [online]. World Academy of Science, Engineering and Technology.
    April 2009, vol. 28(4). 238 - 240
    [viewed 18 April 2024]. Available from: https://publications.waset.org/pdf/14712.