Frederick Schulz Markus Ebbecke Michael Gillmann Benjamin Adrian Stefan Agne Andreas Dengel Seizing the Treasure: Transferring Knowledge in Invoice Analysis. 848-852 2009 ICDAR http://dx.doi.org/10.1109/ICDAR.2009.47 conf/icdar/2009 db/conf/icdar/icdar2009.html#SchulzEGAAD09