Jean-Luc Bloechle Maurizio Rigamonti Karim Hadjar Denis Lalanne Rolf Ingold XCDF: A Canonical and Structured Document Format. 141-152 2006 conf/das/2006 Document Analysis Systems http://dx.doi.org/10.1007/11669487_13 db/conf/das/das2006.html#BloechleRHLI06