Widodo, S., B. A. Sulistyono, and Y. Katminingsih. “Numerical Simulation of Infectious Disease Spread Using the SIR Model: An Application of Euler’s Method”. International Journal Of Mathematics And Computer Research, Vol. 13, no. 2, Feb. 2025, pp. 4894-8, doi:10.47191/ijmcr/v13i2.14.