Danny De Cock Karel Wouters Bart Preneel Introduction to the Belgian EID Card: BELPIC. 1-13 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3093&spage=1 2004 conf/europki/2004 EuroPKI db/conf/europki/europki2004.html#CockWP04