Clustering and classification of document structure-a machine learning approach. - Andreas Dengel 001; Frank Dubiel (ICDAR, 1995)

Formclas - a System for OCR Free identification of Forms. - Frank Dubiel; Andreas Dengel 001 (DAS, 1996)

Computer understanding of document structure. - Andreas Dengel 001; Frank Dubiel (Int. J. Imaging Syst. Technol., 1996)

Selecting distinctive attributes for concept learning. - Andreas Dengel 001; Frank Dubiel (KES (1), 1997)