The following publications are possibly variants of this publication: 
- Impact of the fear effect in a prey-predator model incorporating a prey refugeHuisen Zhang, Yongli Cai, Shengmao Fu, Weiming Wang. amc, 356:328-337, 2019.  [doi] 
- Impact of the Fear Effect on the Stability and Bifurcation of a Leslie-Gower Predator-Prey ModelXiaoqin Wang, Yiping Tan, Yongli Cai, Weiming Wang. IJBC, 30(14), 2020.  [doi] 
- Qualitative analysis of predator-prey models with Beddington-DeAngelis functional response and diffusionWenyan Chen, Mingxin Wang. mcm, 42(1-2):31-44, 2005.  [doi]