Niels Christian Juul Kim Viborg Andersen Sara Korzen-Bohr Challenging the Paradigms on Up-Stream B2B E-Commerce? 2004 HICSS http://csdl.computer.org/comp/proceedings/hicss/2004/2056/07/205670168babs.htm db/conf/hicss/hicss2004-7.html#JuulAK04