@inproceedings{
 BBA11,
 author = {Juan Manuel Barrios and Benjamin Bustos and Xavier Anguera},
 title = {Combining features at search time: PRISMA at Video Copy Detection Task},
 booktitle = {Proc. TRECVID 2011},
 year = {2011},
 numpages = {8},
 publisher = {NIST}
}