Guezane Lakoud, A., and R. Khaldi. 2026. “Existence, Uniqueness, and Ulam–Hyers Stability of Periodic Solutions for a Discrete Nicholson’s Blowflies Equation With Proportional Delay”. Bulletin of the Karaganda University. Mathematics Series 123 (3):86-98. https://doi.org/10.31489/2026m3/86-98.