Euripidis Loukis Alexandros Xenakis Nektaria Tseperli Using Argument Visualization to Enhance e-Participation in the Legislation Formation Process. 125-138 2009 ePart http://dx.doi.org/10.1007/978-3-642-03781-8_12 conf/epart/2009 db/conf/epart/epart2009.html#LoukisXT09