Team, S. “Ψ-Stability for Nonlinear Difference Equations: T. S. Rao, G. Suresh Kumar, M.S. N. Murty”. Thai Journal of Mathematics, vol. 16, no. 3, Dec. 2018, pp. 801–815, https://thaijmath2.in.cmu.ac.th/index.php/thaijmath/article/view/832.