1. Amato, G., & Savino, P. (2008). Approximate similarity search in metric spaces using inverted files. In Proceeding of the 3rd international ICST conference on scalable information systems. INFOSCALE ’08 (pp. 1–10). Italy: Vico Equense.
2. Batko, M., Falchi, F., Lucchese, C., Novak, D., Perego, R., Rabitti, F., et al. (2008a). Crawling, indexing, and similarity searching images on the web. In Proceedings of the 16th Italian symposium on advanced database systems. SEDB ’08 (pp. 382–389). Mondello, Italy.
3. Batko, M., Kohoutkova, P., & Zezula, P. (2008b). Combining metric features in large collections. In Proceedings of the first international workshop on similarity search and applications. SISAP ’08 (pp. 79–86). Cancún, Mexico.
4. Bawa, M., Condie, T., & Ganesan, P. (2005). LSH Forest: Self-tuning indexes for similarity search. In Proceedings of the 14th international conference on World Wide Web. WWW ’05. Chiba, Japan (pp. 651–660).
5. Bolettieri, P., Esuli, A., Falchi, F., Lucchese, C., Perego, R., Piccioli, T., et al. (2009). CoPhIR: A test collection for content-based image retrieval. CoRR abs/0905.4627.