Alok Kumar Routa and  Priya Ranjan Mohanty,  Kirchhoff’s Depth Migration over Heterogeneous Velocity Models with Ray Tracing Modeling Approach.   journal   = {International Journal of Geological and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2017, vol. 122(2). 120 - 123
    [viewed 20 April 2024]. Available from: https://publications.waset.org/pdf/10006241.