S. Burbulla, und C. Rohde. Finite Volumes for Complex Applications IX - Methods, Theoretical Aspects, Examples, Seite 547-555. Cham, Springer International Publishing, (2020)
C. Bahlmann, B. Haasdonk, und H. Burkhardt. Proc. of the 8th International Workshop on Frontiers in Handwriting Recognition, Seite 49--54. IEEE Computer Society, (2002)
M. Kargar, H. Minbashian, und M. Mashinchi. Proceedings of the 10th Iranian Conference on Fuzzy Systems, Shahid Beheshti Univ. Of Tehran, Tehran, Iran, (Juli 2010)