Djamel Gaceb Véronique Eglin Frank Lebourgeois Hubert Emptoz Graph b-Coloring for Automatic Recognition of Documents. 261-265 2009 ICDAR http://dx.doi.org/10.1109/ICDAR.2009.72 conf/icdar/2009 db/conf/icdar/icdar2009.html#GacebELE09