A systematic study of autonomous and nonautonomous predator–prey models for the combined effects of fear, refuge, cooperation and harvestingBapin Mondal, Subarna Roy, Uttam Ghosh and Pankaj Kumar TiwariEur. Phys. J. Plus, 137 6 (2022) 724DOI: https://doi.org/10.1140/epjp/s13360-022-02915-0