Introduction

Monotone iterative technique for degenerate singular perturbation problem

Monotone iterative technique for degenerate singular perturbation problem with

The method of generalized quasilinearization for degenerate singular perturbation problem

Extension of the method of generalized quasilinearization for degenerate singular perturbation problem

The method of generalized quasilinearization for degenerate singular perturbation problem with periodic boundary conditions

Generalized quasilinearization for singular system of differential equations