Nicola Adami A. Boschetti Riccardo Leonardi Pierangelo Migliorati Scalable coding of image collections with embedded descriptors. 388-392 2008 MMSP http://dx.doi.org/10.1109/MMSP.2008.4665109 conf/mmsp/2008 db/conf/mmsp/mmsp2008.html#AdamiBLM08