Kurt Bollacker, Colin Evans, Praveen Paritosh, Tim Sturge, Jamie Taylor, FreebaseProceedings of the 2008 ACM SIGMOD international conference on Management of data - SIGMOD '08. pp. 1247- 1250 ,(2008) , 10.1145/1376616.1376746
Proceedings of the 54th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers) Association for Computational Linguistics