Hussain, S. ., Khalid, A. ., Javed, S. ., & Khan, I. . (2025). Stochastic SEIR Model with Two Infectious Classes Under Environmental Variability: Well-Posedness, Extinction Persistence Thresholds, and Milstein Based 3D Simulations. Contemporary Mathematics, 6(6), 8128–8145. https://doi.org/10.37256/cm.6620258833