An efficient mixed asymptotic-numerical scheme for singularly perturbed convection diffusion problems. - Aditya Kaushik; Vijayant Kumar; Anil K. Vashishth (Appl. Math. Comput., 2012)

A modified graded mesh and higher order finite element approximation for singular perturbation problems. - Aditya Kaushik; Anil K. Vashishth; Vijayant Kumar; Manju Sharma (J. Comput. Phys., 2019)

A modified graded mesh and higher order finite element method for singularly perturbed reaction-diffusion problems. - Aditya Kaushik; Vijayant Kumar; Manju Sharma; Nitika Sharma (Math. Comput. Simul., 2021)