1. Cheung, G., Magli, E., Tanaka, Y., Ng, M.: Graph spectral image processing. Proc. IEEE 106(5), 907–930 (2018)
2. Goncharov, A.V., Karkishchenko, A.N.: Effects of illumination and quality of frontal faces recognition. SFedU Proc. Eng. Sci. 81(4), 82–92 (2008)
3. Goncharov, A.V.: Investigation of properties of sign representations in pattern recognition problems. SFedU Proceedings in Engineering Sciences (Special Issue) 178–188 (2009)
4. Karkishchenko, A.N., Goncharov, A.V.: Sign reprsentations geometry applied for noise stability investigations. In: 8th International Conference on Intellectualization of Images Processing (IIP-8), pp. 335–339 (2010)
5. Karkishchenko, A.N., Goncharov, A.V.: Stability investigation of the sign representation of images. Autom. Remote Control 71(9), 1793–1803 (2010)