WASET
    Tudor Barbu,  A Nonlinear Parabolic Partial Differential Equation Model for Image Enhancement.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2016, vol. 116(8). 1440 - 1443
    [viewed 18 April 2024]. Available from: https://publications.waset.org/pdf/10004972.