Marc C. Robini and  Pierre-Jean Viverge and  Yuemin Zhu and  Jianhua Luo,  Globally Convergent Edge-preserving Reconstruction with Contour-line Smoothing.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2011, vol. 54(6). 689 - 694
    [viewed 19 April 2024]. Available from: https://publications.waset.org/pdf/1459.