1. Bigun, J.: Optimal orientation detection of linear symmetry. In: Proceedings of the IEEE-First International Conference on Computer Vision, London, 8–11 June 1987, pp. 433–438. http://www.diva-portal.org/smash/get/diva2:691493/FULLTEXT01.pdf
2. Brox, T., Weickert, J., Burgeth, B., Mrázek, P.: Nonlinear structure tensors. Image Vis. Comput. 24(1), 41–55 (2006)
3. Citti, G., Sarti, A.: A cortical based model of perceptual completion in the roto-translation space. J. Math. Imaging Vision 24(3), 307–326 (2006)
4. Colman, A.M.: A Dictionary of Psychology. Oxford University Press, Oxford (2015)
5. Coren, S., Girgus, J.S.: Seeing is Deceiving: The Psychology of Visual Illusions. Hillsdale: Lawrence Erlbaum (1978)