Analysis and understanding of multi-class invoices.

Francesca Cesarini Enrico Francesconi Marco Gori Giovanni Soda Analysis and understanding of multi-class invoices. 102-114 2003 6 IJDAR 2 http://dx.doi.org/10.1007/s10032-002-0084-6 db/journals/ijdar/ijdar6.html#CesariniFGS03