VisualGREP: A systematic method to compare and retrieve video sequences (2000)
http://www.informatik.uni-mannheim.de/informatik/pi4/projects/MoCA/Project-visualGREP.html

The Virage Video Engine(VVE) and Visual Database (1999)
http://meru.cecs.missouri.edu/mm_seminar/virage.html

Similarity Indexing for Data Mining Applications (1996)
http://citeseer.nj.nec.com/132275.html

Metadata in Video Databases (1994)
http://citeseer.nj.nec.com/jain94metadata.html