Johannes Partzsch and  Christian Mayr and  Rene Schuffny,  Building Gabor Filters from Retinal Responses.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2007, vol. 1(1). 79 - 84
    [viewed 06 December 2019]. Available from: https://publications.waset.org/pdf/10115.