Nurit Gal-Oz Ran Yahalom Ehud Gudes Identifying Knots of Trust in Virtual Communities. 67-81 2011 IFIPTM http://dx.doi.org/10.1007/978-3-642-22200-9_8 conf/ifiptm/2011 db/conf/ifiptm/ifiptm2011.html#Gal-OzYG11