Zhang, Tongqian, Xinzhu Meng, Yi Song, and Tonghua Zhang. “A Stage-Structured Predator-Prey Si Model With Disease in the Prey and Impulsive Effects”. Mathematical Modelling and Analysis 18, no. 4 (September 1, 2013): 505-528. Accessed July 3, 2024. https://jau.vgtu.lt/index.php/MMA/article/view/4132.