R. Mihalcea, P. Tarau, and E. Figa. COLING '04: Proceedings of the 20th international conference on Computational Linguistics, page 1126. Morristown, NJ, USA, Association for Computational Linguistics, (2004)
P. Chirita, S. Ghita, W. Nejdl, and R. Paiu. Proceedings of the 1st Workshop on The Semantic Desktop at the ISWC 2005 Conference, page 92 - 106. Galway, Ireland, (November 2005)