1. Parallel Text Processing
2. J. Gantz D. Reinsel The Digital Universe In 2020: Big Data, Bigger Digital Shadows, and Biggest Growth in the Far East http://www.emc.com/collateral/analyst-reports/idc-the-digital-universe-in-2020.pdf
3. J. Novet Facebook unveils Presto engine for querying 250 PB data warehouse https://gigaom.com/2013/06/06/facebook-unveils-presto-engine-for-querying-250-pb-data-warehouse/
4. N. Kennedy Google processes over 20 petabytes of data per day http://www.niallkennedy.com/blog/2008/01/google-mapreduce-stats.html
5. Black Holes and Entropy