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CHO, Junghoo; GARCIA-MOLINA, Hector. Synchronizing a Database to Improve Freshness. In: Proceedings of the 2000 ACM SIGMOD International Conference on Management of Data. New York, NY, USA: ACM, 2000-01-01. Dostupné online. ISBN1581132174. doi:10.1145/342009.335391. S. 117–128.
GULLI, A.; SIGNORINI, A. The Indexable Web is More Than 11.5 Billion Pages. In: Special Interest Tracks and Posters of the 14th International Conference on World Wide Web. New York, NY, USA: ACM, 2005-01-01. Dostupné online. ISBN1595930515. doi:10.1145/1062745.1062789. S. 902–903.
CHO, Junghoo; GARCIA-MOLINA, Hector. Synchronizing a Database to Improve Freshness. In: Proceedings of the 2000 ACM SIGMOD International Conference on Management of Data. New York, NY, USA: ACM, 2000-01-01. Dostupné online. ISBN1581132174. doi:10.1145/342009.335391. S. 117–128.