W. Z. Hemead and S. N. . . Ketab, “Properties of Asymptotic Behaviour Regarding the resolution of linear neutral difference equations of the second order with positive and negative coefficients”, Jour. Kufa Math. Comp., vol. 13, no. 1, pp. 9–14, Mar. 2026, doi: 10.31642/JoKMC/2018/130102.