Christian Halaschek-Wiener Jennifer Golbeck Andrew Schain Michael Grove Bijan Parsia James A. Hendler Annotation and Provenance Tracking in Semantic Web Photo Libraries. 82-89 2006 conf/ipaw/2006 IPAW http://dx.doi.org/10.1007/11890850_10 db/conf/ipaw/ipaw2006.html#Halaschek-WienerGSGPH06