Hira Lal Gope and  Hidekazu Fukai ,  Normal and Peaberry Coffee Beans Classification from Green Coffee Bean Images Using Convolutional Neural Networks and Support Vector Machine.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    May 2020, vol. 162(6). 189 - 196
    [viewed 13 August 2020]. Available from: https://publications.waset.org/pdf/10011255.