A coupled system of difference equations

Multiple positive solutions of a discrete difference system

Applied Mathematics and Computation

Existence of positive solutions to second-order time scale systems

Computers & Mathematics with Applications

Solutions of constant signs of a system of Sturm-Liouville boundary value problems

Mathematical and Computer Modelling: An International Journal

Existence of positive solution for second-order nonlinear discrete system with parameter

Mathematical and Computer Modelling: An International Journal

Multiple positive solutions of a singular gelfand type problem for second-order impulsive differential systems

Mathematical and Computer Modelling: An International Journal