Liu, Pengyan, Liang Zhang, Shitao Liu, and Lifei Zheng. 2017. “Global Exponential Stability of Almost Periodic Solutions for Nicholson’s Blowflies System With Nonlinear Density-Dependent Mortality Terms and Patch Structure”. Mathematical Modelling and Analysis 22 (4):484-502. https://doi.org/10.3846/13926292.2017.1329171.