Chad Goldsworthy and  B. Rajeswari Matam,  Improved Rare Species Identification Using Focal Loss Based Deep Learning Models.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2021, vol. 169(1). 18 - 22
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/10011740.