Marko Luther Thorsten Liebig Sebastian Böhm Olaf Noppens Who the Heck Is the Father of Bob?. 66-80 2009 ESWC http://dx.doi.org/10.1007/978-3-642-02121-3_9 conf/esws/2009 db/conf/esws/eswc2009.html#LutherLBN09