@INPROCEEDINGS{
        BM07,
        AUTHOR    = "Benjamin Bustos and Nelson Morales",
        TITLE     = "An optimal set of indices for dynamic combinations of metric spaces",
        BOOKTITLE = "Proc. SIGIR Workshop on Multimedia Information Retrieval (MIR'07)",
	PAGES	  = "32--39",
	YEAR	  = "2007"
}