1. Antonacopoulos, A., Clausner, C., Papadopoulos, C., Pletschacher, S.: ICDAR 2013 competition on historical book recognition. In: Proceedings of the International Conference on Document Analysis and Recognition, pp. 1459–1463 (2013)
2. Baldi, S., Marinai, S., Soda, G.: Using tree-grammars for training set expansion in page classification. In: Proceedings of the 7th International Conference on Document Analysis and Recognition, pp. 1–5 (2003)
3. Byun, Y., Lee, Y.: Form classification using DP matching. In: Proceedings of the ACM Symposium on Applied Computing, vol. 1, pp. 1–4 (2000)
4. Cesarini, F., Gori, M., Marinai, S., Soda, G.: Structured document segmentation and representation by the modified XY tree. In: Proceedings of the Fifth International Conference on Document Analysis and Recognition, pp. 563–566 (1999)
5. Cesarini, F., Lastri, M., Marinai, S., Soda, G.: Encoding of modified XY trees for document classification. In: Proceedings of Sixth International Conference on Document Analysis and Recognition, pp. 1131–1136 (2001)