P. Mushahary, S. R. Sahu, and J. Mohapatra,"Spline approximation method for singularly perturbed differential-difference equation on nonuniform grids", International Journal of Modeling, Simulation, and Scientific Computing, vol.12, no.1, pp.2150005, Inderscience, January 2021, 10.1142/S1793962321500057       Article

A. Panda, J. Mohapatra, and I. Amirali,"A Second-Order Post-processing Technique for Singularly Perturbed Volterra Integro-differential Equations", Mediterranean Journal of Mathematics, Springer 2021, 10.1007/s00009-021-01873-8       Article

S. Priyadarshana, J. Mohapatra, and L. G. Rao,"An efficient uniformly convergent numerical scheme for singularly perturbed semilinear parabolic problems with large delay in time", Journal of Applied Mathematics and Computing, Springer, September 2021, 10.1007/s12190-021-01633-7       Article

S. R. Sahu and J. Mohapatra,"Numerical investigation of time delay parabolic differential equation involving two small parameters", Engineering Computations, vol.38, no.6, pp.2882-2899, Emerald 2021, 10.1108/EC-07-2020-0369       Article

S. Santra and J. Mohapatra,"Numerical Analysis of Volterra Integro-differential Equations with Caputo Fractional Derivative", Iranian Journal of Science and Technology, Transactions A: Science, vol.45, pp.1815–1824, Springer, July 2021, 10.1007/s40995-021-01180-7       Article

S. R. Sahu and J. Mohapatra,"Numerical study of time delay singularly perturbed parabolic differential equations involving both small positive and negative space shifts", Journal of Applied Analysis, De Gruyter, October 2021, 10.1515/jaa-2021-2064       Article

S. Priyadarshana, J. Mohapatra, and S. R. Pattanaik,"Parameter uniform optimal order numerical approximations for time-delayed parabolic convection diffusion problems involving two small parameters", Computational and Applied Mathematics, vol.41, pp.233, Springer, November 2021, 10.1007/s40314-022-01928-w       Article

A. Panda, J. Mohapatra, and I. Amiraliyeva,"A second order post-processing technique for singularly perturbed Volterra integro-differential equations", Mediterranean Journal of Mathematics, vol.18, pp.231, Springer, March 2021, 10.1007/s00009-021-01873-8       Article

A. Panda, J. Mohapatra, and N. R. Reddy,"A Comparative Study on the Numerical Solution for Singularly Perturbed Volterra Integro-Differential Equations", Computational Mathematics and Modeling, vol.32, pp.364-375, Springer 2021, 10.1007/s10598-021-09536-9       Article

S. Santra, A. Panda, and J. Mohapatra,"A novel approach for solving multi-term time fractional Volterra-Fredholm partial integro-differential equations", Journal of Applied Mathematics and Computing, vol.68, pp.3545-3563, Springer 2021, 10.1007/s12190-021-01675-x       Article