WASET
    Vitomir Struc and  Nikola Pavesic,  A Case Study on Appearance Based Feature Extraction Techniques and Their Susceptibility to Image Degradations for the Task of Face Recognition.   journal   = {International Journal of Electrical and Computer Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2009, vol. 30(6). 1351 - 1359
    [viewed 29 March 2024]. Available from: https://publications.waset.org/pdf/8820.