1. Lecture Notes in Computer Science;P. Clough,2004
2. Lecture Notes in Computer Science;P. Clough,2005
3. Lecture Notes in Computer Science;J. Gonzalo,2006
4. Lecture Notes in Computer Science;P. Clough,2004
5. Grubinger, M., Leung, C., Clough, P.: Towards a topic complexity measure for cross–language image retrieval. In: Proceedings of Cross Language Evaluation Forum (CLEF) 2005 Workshop, Vienna, Austria (2005)