Liu, X., Han, J., Lei, Y., Yue, D., & Tian, H. (2026). A Delay-Embedded D-SIRS Model for Associated Credit Risk Contagion on Complex Networks: Threshold, Equilibrium, and Robustness Analysis. Contemporary Mathematics, 7(4), 4748–4770. https://doi.org/10.37256/cm.7420269876