1. Klein, B., Dengel, A., Fordan, A.: smartfix: An adaptive system for document analysis and understanding. In: Reading and Learning, pp. 166–186 (2004)
2. Opentext, Opentext capture center (2012),
http://www.opentext.com/2/global/products/products-capture-and-imaging/products-opentext-capture-center.htm
3. Schulz, F., Ebbecke, M., Gillmann, M., Adrian, B., Agne, S., Dengel, A.: Seizing the treasure: Transferring knowledge in invoice analysis. In: 10th International Conference on Document Analysis and Recognition, pp. 848–852 (2009)
4. Sako, H., Seki, M., Furukawa, N., Ikeda, H., Imaizumi, A.: Form reading based on form-type identification and form-data recognition. In: Seventh International Conference on Document Analysis and Recognition, pp. 926–930 (2003)
5. Appiani, E., Cesarini, F., Colla, A.M., Diligenti, M., Gori, M., Marinai, S., Soda, G.: Automatic document classification and indexing in high-volume applications. International Journal on Document Analysis and Recognition 4(2), 69–83 (2001)