WASET
    Maria C. Proença and  Marco Aniceto and  Pedro N. Santos and  José C. Freitas,  Automatic Detection of Defects in Ornamental Limestone Using Wavelets.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    April 2016, vol. 113(5). 864 - 869
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/10004592.