WASET
    A. K. Sethi and  R. N. Patra and  B. Nayak,  Generalized Chaplygin Gas and Varying Bulk Viscosity in Lyra Geometry.   journal   = {International Journal of Physical and Mathematical Sciences}, [online]. World Academy of Science, Engineering and Technology.
    October 2019, vol. 155(11). 213 - 216
    [viewed 27 April 2024]. Available from: https://publications.waset.org/pdf/10010904.