Hincal, Evren, et al. “Stability Analysis of an Eco-Epidemiological Model Consisting of a Prey and Two Competing Predators With SI-Disease in Prey and Toxicant”. Bulletin of the Karaganda University. Mathematics Series, vol. 99, no. 3, Sept. 2020, pp. 55-61, doi:10.31489/2020m3/55-61.