Jonathan Bohn and  Jorge Rebaza and  Kaitlin Speer,  Continuous Threshold Prey Harvesting in Predator-Prey Models.   journal   = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology.
    July 2011, vol. 55(7). 996 - 1003
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/11256.