María Paula González Victor M. Ruiz Penichet Guillermo Ricardo Simari Ricardo Tesoriero Development of CSCW Interfaces from a User-Centered Viewpoint: Extending the TOUCHE Process Model through Defeasible Argumentation. 955-964 2009 HCI (10) http://dx.doi.org/10.1007/978-3-642-02806-9_109 conf/hci/2009-10 db/conf/hci/hci2009-10.html#GonzalezPST09